WP / NF: Fix and improve the handling of reCAPTCHA V2 in Ninja Forms. See README below.

front-end-deps.js

/**
 * Customization of Ninja Forms reCAPTCHA Field
 *
 * The following must replace its equivalent in 'assets/js/min/front-end-deps.js'. See diff file.
 */

var nfRadio = Backbone.Radio;

var nfRecaptcha = Marionette.Object.extend( {
    /** @var {boolean} - Validate only one reCAPTCHA at a time. */
    isBusy: false,
    /** @var {?{ninja-forms:FormModel}} - Track which form is submitting. */
    isSubmitting: null,

    initialize: function () {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.initialize');
        DEBUG && console.log('.g-recaptcha', document.querySelectorAll('.g-recaptcha'));

        /*
         * If we've already rendered our form view, render our recaptcha fields.
         */
        if ( 0 != jQuery( '.g-recaptcha' ).length ) {
            this.renderAll();
        }

        /*
         * We haven't rendered our form view, so hook into the view render radio message, and then render.
         */
        this.listenTo( nfRadio.channel( 'recaptcha' ), 'render:view', this.renderFieldView );
        this.listenTo( nfRadio.channel( 'submit' ), 'validate:field', this.validateCaptcha );

        DEBUG && console.groupEnd();
    },

    /**
     * @param {ninja-forms:FormModel} formModel - The Ninja Forms form model.
     */
    beforeSubmit: function ( formModel ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.beforeSubmit');

        this.isSubmitting = formModel;
        DEBUG && console.log('Form:', formModel);

        DEBUG && console.groupEnd();
    },

    renderAll: function ( formView ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.renderAll');

        var nfController = this;

        jQuery( '.g-recaptcha:empty' ).each( function () {
            nfController.renderCaptcha( this );
        } );

        DEBUG && console.groupEnd();
    },

    /**
     * @param {ninja-forms:FieldItem} fieldView - The Ninja Forms field view model.
     */
    renderFieldView: function ( fieldView ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.renderFieldView');

        DEBUG && console.log('Field View:', fieldView);
        DEBUG && console.log('Field Model:', fieldView.model);
        DEBUG && console.log('Field Element:', fieldView.el);

        var nfController = this;

        jQuery( fieldView.el ).find( '.g-recaptcha:empty' ).each( function () {
            nfController.renderCaptcha( this, fieldView.model );
        } );

        DEBUG && console.groupEnd();
    },

    /**
     * @param {ninja-forms-multi-part:MainLayoutView} formView - The Ninja Forms form view model.
     */
    renderFormView: function ( formView ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.renderFormView');
        DEBUG && console.log('Form View:', formView);
        DEBUG && console.log('Form Model:', formView.model);

        var nfController = this;

        mainLayoutView.$el.find( '.g-recaptcha:empty' ).each( function () {
            nfController.renderCaptcha( this );
        } );

        DEBUG && console.groupEnd();
    },

    /**
     * @param {HTMLElement}  fieldElement
     * @param {NFFieldModel} fieldModel
     */
    renderCaptcha: function ( fieldElement, fieldModel ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.renderCaptcha');
        DEBUG && console.log( 'Field Element:', fieldElement );

        if ( fieldElement.childElementCount > 0 ) {
            DEBUG && console.log('Skipping; Not Empty');
            DEBUG && console.groupEnd();
            return;
        }

        var $fieldEl = jQuery( fieldElement );

        var fieldID = fieldModel && fieldModel.id || $fieldEl.data( 'fieldid' );

        if ( ! fieldModel ) {
            fieldModel = nfRadio.channel( 'fields' ).request( 'get:field', fieldID );

            if ( ! fieldModel ) {
                DEBUG && console.log( 'Skipping; Missing Field Model' );
                DEBUG && console.groupEnd();
                return;
            }
        }

        var grecaptchaID = fieldModel.get( 'grecaptchaID' );
        if ( grecaptchaID ) {
            DEBUG && console.log( 'Skipping; reCAPTCHA already rendered' );
            DEBUG && console.groupEnd();
            return;
        }

        DEBUG && console.log( 'Form ID:', Number.parseInt( fieldModel.get( 'formID' ) ) );
        DEBUG && console.log( 'Field ID:', fieldID );
        DEBUG && console.log( 'Field Model:', fieldModel );

        var opts = {
            fieldid: fieldID,
            size: $fieldEl.data( 'size' ),
            theme: $fieldEl.data( 'theme' ),
            sitekey: $fieldEl.data( 'sitekey' ),
            callback: $fieldEl.data( 'callback' )
        };

        DEBUG && console.log( 'Options:', opts );

        if ( typeof window[ opts.callback ] !== 'function' ) {
            DEBUG && console.log( 'Create callback:', opts.callback );
            window[ opts.callback ] = function ( response ) {
                DEBUG && console.group(opts.callback);
                DEBUG && console.log('fieldID:', fieldID);
                DEBUG && console.log('response:', response);

                nfRadio.channel( 'recaptcha' ).request( 'update:response', response, fieldID );
                nfRadio.channel( 'captcha' ).request( 'update:response', response, fieldID );

                DEBUG && console.groupEnd();
            };
        }

        try {
            grecaptchaID = grecaptcha.render( fieldElement, opts );
            DEBUG && console.log( 'reCAPTCHA:', grecaptchaID );
        } catch ( e ) {
            this.isBusy = false;
            console.warn( 'Notice: Error trying to render grecaptcha.' );
            DEBUG && console.log( 'Caught error:', e );
        }

        if ( opts.size === 'invisible' ) {
            fieldModel.set( 'grecaptchaID', grecaptchaID );

            this.listenTo( nfRadio.channel( 'form-' + fieldModel.get( 'formID' ) ), 'before:submit', this.beforeSubmit );

            nfRadio.channel( 'captcha' ).reply( 'update:response', this.updateValidation, this );
        }

        DEBUG && console.groupEnd();
    },

    /**
     * @param {string}        response - The reCAPTCHA response value.
     * @param {string|number} fieldID  - The Ninja Forms CAPTCHA field ID.
     */
    updateValidation: function ( response, fieldID ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.updateValidation');

        var fieldModel = nfRadio.channel( 'fields' ).request( 'get:field', fieldID );
        DEBUG && console.log('Field:', fieldModel);

        if ( ! fieldModel ) {
            DEBUG && console.log( 'Skipping; Missing Field Model' );
            DEBUG && console.groupEnd();
            return;
        }

        nfRadio.channel( 'fields' ).request( 'remove:error', fieldID, 'recaptcha-processing' );

        var formModel = this.isSubmitting;

        this.isSubmitting = null;
        this.isBusy = false;

        if ( formModel ) {
            DEBUG && console.log( 'Attempting to re-submit form' );
            nfRadio.channel( 'form-' + formModel.id ).request( 'submit', formModel );
        } else {
            DEBUG_CONTROLLER && console.log( 'Failed; Missing Form' );
        }

        DEBUG && console.groupEnd();
    },

    /**
     * @param {NFFieldModel} fieldModel
     */
    validateCaptcha: function ( fieldModel ) {
        var DEBUG = nfRecaptcha.DEBUG;

        DEBUG && console.group('nfRecaptcha.validateCaptcha --', 'Field:', fieldModel.id);

        var fieldID      = fieldModel.id;
        var fieldType    = fieldModel.get( 'type' );
        var fieldSize    = fieldModel.get( 'size' );
        var grecaptchaID = fieldModel.get( 'grecaptchaID' );

        if ( this.isBusy ) {
            DEBUG && console.log( 'Skipping; Busy' );
            DEBUG && console.groupEnd();
            return;
        }

        if ( ! this.isSubmitting ) {
            DEBUG && console.log( 'Skipping; Not Submitting' );
            DEBUG && console.groupEnd();
            return;
        }

        if (
            fieldType !== 'recaptcha' ||
            fieldSize !== 'invisible' ||
            fieldModel.get( 'clean' )
        ) {
            DEBUG && console.log( 'Skipping; Not reCAPTCHA Field' );
            DEBUG && console.groupEnd();
            return;
        }

        if ( grecaptchaID == null ) {
            DEBUG && console.log( 'Skipping; Missing reCAPTCHA Widget ID' );
            DEBUG && console.groupEnd();
            return;
        }

        this.isBusy = true;

        var fieldValue    = fieldModel.get( 'value' );
        var fieldOldValue = fieldModel.get( 'old_value' );
        DEBUG && console.log( 'New Value:', fieldValue );
        DEBUG && console.log( 'Old Value:', fieldOldValue );

        nfRadio.channel( 'fields' ).request( 'remove:error', fieldID, 'required-error' );

        if ( fieldOldValue != null && fieldValue ) {
            fieldModel.set( 'old_value', null );

            this.isBusy = false;
            DEBUG && console.log( 'CAPTCHA Validated' );
            DEBUG && console.groupEnd();
            return;
        }

        fieldModel.set( 'old_value', fieldValue );

        var formModel = nfRadio.channel( 'form-' + fieldModel.get( 'formID' ) ).request( 'get:form' );
        if ( ! formModel ) {
            this.isBusy = false;
            DEBUG && console.log( 'Skipping; Missing Form Model' );
            DEBUG && console.groupEnd();
            return;
        }

        nfRadio.channel( 'fields' ).request(
            'add:error',
            fieldID,
            'recaptcha-processing',
            formModel.get('settings').recaptchaProcessing
        );

        try {
            DEBUG && console.log( 'Attempting to execute reCAPTCHA' );
            nf_reprocess_recaptcha( grecaptchaID );
        } catch ( e ) {
            this.isBusy = false;
            console.warn( 'Notice: Error trying to execute grecaptcha.' );
            DEBUG && console.log( 'Caught error:', e );
        }

        DEBUG && console.groupEnd();
    }
} );

/** @var {boolean} - Display debug information in console. */
nfRecaptcha.DEBUG = false;

var nfRenderRecaptcha = function() {
	new nfRecaptcha();
}

const nf_reprocess_recaptcha = ( grecaptchaID ) => {
	grecaptcha.execute( grecaptchaID );
}

nf-field-recaptcha.php

<?php

/**
 * Customization of Ninja Forms reCAPTCHA Field
 */
class FieldRecaptcha
{
    public function boot() : void
    {
        add_filter( 'ninja_forms_display_form_settings', [ $this, 'filter_ninja_forms_display_form_settings' ], 10, 2 );
        add_filter( 'ninja_forms_form_display_settings', [ $this, 'filter_ninja_forms_form_display_settings' ] );
    }

    /**
     * Adds custom labeling settings to the pool of all form settings in Ninja Forms.
     *
     * @listens filter:ninja_forms_form_display_settings
     *
     * @param  array<string, array<string, mixed>> $settings The form settings.
     * @return array<string, array<string, mixed>>
     */
    public function filter_ninja_forms_form_display_settings( array $settings ) : array {
        if ( isset( $settings['custom_messages']['settings'] ) ) {
            $settings['custom_messages']['settings'] = array_merge(
                $settings['custom_messages']['settings'],
                $this->get_messages_form_settings()
            );
        }

        return $settings;
    }

    /**
     * Adds any custom labels to form settings in Ninja Forms.
     *
     * @listens filter:ninja_forms_display_form_settings
     *
     * @param  array<string, array<string, mixed>> $settings The form settings.
     * @param  int|string                          $form_id  The form ID.
     * @return array<string, array<string, mixed>>
     */
    public function filter_ninja_forms_display_form_settings( array $settings, $form_id ) : array {
        foreach ( $this->get_messages() as $name => $label ) {
            if ( empty( $settings[ $name ] ) ) {
                $settings[ $name ] = $label;
            }
        }

        return $settings;
    }

    /**
     * Returns an associative array of error/messages.
     *
     * @return array<string, string>
     */
    public function get_messages() : array {
        $messages = [
            'recaptchaProcessing' => _x( 'Please wait, processing CAPTCHA field.', 'recaptcha field', 'nf-custom-recaptcha' ),
            'recaptchaRequired'   => _x( 'Please complete the CAPTCHA field.', 'recaptcha field', 'nf-custom-recaptcha' ),
            'recaptchaMismatch'   => _x( 'Please enter the correct value in the CAPTCHA field.', 'recaptcha field', 'nf-custom-recaptcha' ),
        ];

        return $messages;
    }

    /**
     * Retrieves custom validation form settings to Ninja Forms.
     *
     * @return array<string, array<string, mixed>>
     */
    public function get_messages_form_settings() : array {
        $settings = [];

        foreach ( $this->get_messages() as $name => $label ) {
            $setting = [
                'name'  => $name,
                'type'  => 'textbox',
                'label' => esc_html( $label ),
                'width' => 'full',
            ];

            $settings[] = $setting;
        }

        return $settings;
    }
}

nf-front-end-deps.js.diff

#
# Tested with Ninja Forms Multo Part v3.6.24
#
--- assets/js/min/front-end-deps.js
+++ assets/js/min/front-end-deps.js
@@ -67,57 +67,314 @@
 
 var nfRadio = Backbone.Radio;
 
-nfRadio.channel( 'form' ).on( 'render:view', function() {		
-	jQuery( '.g-recaptcha' ).each( function() {
-		var callback = jQuery( this ).data( 'callback' );
-		var fieldID = jQuery( this ).data( 'fieldid' );
-		if ( typeof window[ callback ] !== 'function' ){
-			window[ callback ] = function( response ) {
-				nfRadio.channel( 'recaptcha' ).request( 'update:response', response, fieldID );
-			};
-		}
-	} );
-} );
-
 var nfRecaptcha = Marionette.Object.extend( {
-	initialize: function() {
-		/*
-		 * If we've already rendered our form view, render our recaptcha fields.
-		 */
-		if ( 0 != jQuery( '.g-recaptcha' ).length ) {
-			this.renderCaptcha();
-		}
-		/*
-		 * We haven't rendered our form view, so hook into the view render radio message, and then render.
-		 */
-		this.listenTo( nfRadio.channel( 'form' ), 'render:view', this.renderCaptcha );
-        this.listenTo( nfRadio.channel( 'captcha' ), 'reset', this.renderCaptcha );
-	},
-
-	renderCaptcha: function() {
-		jQuery( '.g-recaptcha:empty' ).each( function() {
-			var opts = {
-				fieldid: jQuery( this ).data( 'fieldid' ),
-				size: jQuery( this ).data( 'size' ),
-				theme: jQuery( this ).data( 'theme' ),
-				sitekey: jQuery( this ).data( 'sitekey' ),
-				callback: jQuery( this ).data( 'callback' )
-			};
-
-			var grecaptchaID = grecaptcha.render( jQuery( this )[0], opts );
-
-			if ( opts.size === 'invisible' ) {
-				try {
-					nf_reprocess_recaptcha( grecaptchaID  );
-					setInterval(nf_reprocess_recaptcha, 110000, grecaptchaID);
-				} catch( e ){
-					console.log( 'Notice: Error trying to execute grecaptcha.' );
-				}
-			}	
-		} );
-	}
+    /** @var {boolean} - Validate only one reCAPTCHA at a time. */
+    isBusy: false,
+    /** @var {?{ninja-forms:FormModel}} - Track which form is submitting. */
+    isSubmitting: null,
+
+    initialize: function () {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.initialize');
+        DEBUG && console.log('.g-recaptcha', document.querySelectorAll('.g-recaptcha'));
+
+        /*
+         * If we've already rendered our form view, render our recaptcha fields.
+         */
+        if ( 0 != jQuery( '.g-recaptcha' ).length ) {
+            this.renderAll();
+        }
+
+        /*
+         * We haven't rendered our form view, so hook into the view render radio message, and then render.
+         */
+        this.listenTo( nfRadio.channel( 'recaptcha' ), 'render:view', this.renderFieldView );
+        this.listenTo( nfRadio.channel( 'submit' ), 'validate:field', this.validateCaptcha );
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {ninja-forms:FormModel} formModel - The Ninja Forms form model.
+     */
+    beforeSubmit: function ( formModel ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.beforeSubmit');
+
+        this.isSubmitting = formModel;
+        DEBUG && console.log('Form:', formModel);
+
+        DEBUG && console.groupEnd();
+    },
+
+    renderAll: function ( formView ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.renderAll');
+
+        var nfController = this;
+
+        jQuery( '.g-recaptcha:empty' ).each( function () {
+            nfController.renderCaptcha( this );
+        } );
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {ninja-forms:FieldItem} fieldView - The Ninja Forms field view model.
+     */
+    renderFieldView: function ( fieldView ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.renderFieldView');
+
+        DEBUG && console.log('Field View:', fieldView);
+        DEBUG && console.log('Field Model:', fieldView.model);
+        DEBUG && console.log('Field Element:', fieldView.el);
+
+        var nfController = this;
+
+        jQuery( fieldView.el ).find( '.g-recaptcha:empty' ).each( function () {
+            nfController.renderCaptcha( this, fieldView.model );
+        } );
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {ninja-forms-multi-part:MainLayoutView} formView - The Ninja Forms form view model.
+     */
+    renderFormView: function ( formView ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.renderFormView');
+        DEBUG && console.log('Form View:', formView);
+        DEBUG && console.log('Form Model:', formView.model);
+
+        var nfController = this;
+
+        mainLayoutView.$el.find( '.g-recaptcha:empty' ).each( function () {
+            nfController.renderCaptcha( this );
+        } );
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {HTMLElement}  fieldElement
+     * @param {NFFieldModel} fieldModel
+     */
+    renderCaptcha: function ( fieldElement, fieldModel ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.renderCaptcha');
+        DEBUG && console.log( 'Field Element:', fieldElement );
+
+        if ( fieldElement.childElementCount > 0 ) {
+            DEBUG && console.log('Skipping; Not Empty');
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        var $fieldEl = jQuery( fieldElement );
+
+        var fieldID = fieldModel && fieldModel.id || $fieldEl.data( 'fieldid' );
+
+        if ( ! fieldModel ) {
+            fieldModel = nfRadio.channel( 'fields' ).request( 'get:field', fieldID );
+
+            if ( ! fieldModel ) {
+                DEBUG && console.log( 'Skipping; Missing Field Model' );
+                DEBUG && console.groupEnd();
+                return;
+            }
+        }
+
+        var grecaptchaID = fieldModel.get( 'grecaptchaID' );
+        if ( grecaptchaID ) {
+            DEBUG && console.log( 'Skipping; reCAPTCHA already rendered' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        DEBUG && console.log( 'Form ID:', Number.parseInt( fieldModel.get( 'formID' ) ) );
+        DEBUG && console.log( 'Field ID:', fieldID );
+        DEBUG && console.log( 'Field Model:', fieldModel );
+
+        var opts = {
+            fieldid: fieldID,
+            size: $fieldEl.data( 'size' ),
+            theme: $fieldEl.data( 'theme' ),
+            sitekey: $fieldEl.data( 'sitekey' ),
+            callback: $fieldEl.data( 'callback' )
+        };
+
+        DEBUG && console.log( 'Options:', opts );
+
+        if ( typeof window[ opts.callback ] !== 'function' ) {
+            DEBUG && console.log( 'Create callback:', opts.callback );
+            window[ opts.callback ] = function ( response ) {
+                DEBUG && console.group(opts.callback);
+                DEBUG && console.log('fieldID:', fieldID);
+                DEBUG && console.log('response:', response);
+
+                nfRadio.channel( 'recaptcha' ).request( 'update:response', response, fieldID );
+                nfRadio.channel( 'captcha' ).request( 'update:response', response, fieldID );
+
+                DEBUG && console.groupEnd();
+            };
+        }
+
+        try {
+            grecaptchaID = grecaptcha.render( fieldElement, opts );
+            DEBUG && console.log( 'reCAPTCHA:', grecaptchaID );
+        } catch ( e ) {
+            this.isBusy = false;
+            console.warn( 'Notice: Error trying to render grecaptcha.' );
+            DEBUG && console.log( 'Caught error:', e );
+        }
+
+        if ( opts.size === 'invisible' ) {
+            fieldModel.set( 'grecaptchaID', grecaptchaID );
+
+            this.listenTo( nfRadio.channel( 'form-' + fieldModel.get( 'formID' ) ), 'before:submit', this.beforeSubmit );
+
+            nfRadio.channel( 'captcha' ).reply( 'update:response', this.updateValidation, this );
+        }
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {string}        response - The reCAPTCHA response value.
+     * @param {string|number} fieldID  - The Ninja Forms CAPTCHA field ID.
+     */
+    updateValidation: function ( response, fieldID ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.updateValidation');
+
+        var fieldModel = nfRadio.channel( 'fields' ).request( 'get:field', fieldID );
+        DEBUG && console.log('Field:', fieldModel);
+
+        if ( ! fieldModel ) {
+            DEBUG && console.log( 'Skipping; Missing Field Model' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        nfRadio.channel( 'fields' ).request( 'remove:error', fieldID, 'recaptcha-processing' );
+
+        var formModel = this.isSubmitting;
+
+        this.isSubmitting = null;
+        this.isBusy = false;
+
+        if ( formModel ) {
+            DEBUG && console.log( 'Attempting to re-submit form' );
+            nfRadio.channel( 'form-' + formModel.id ).request( 'submit', formModel );
+        } else {
+            DEBUG_CONTROLLER && console.log( 'Failed; Missing Form' );
+        }
+
+        DEBUG && console.groupEnd();
+    },
+
+    /**
+     * @param {NFFieldModel} fieldModel
+     */
+    validateCaptcha: function ( fieldModel ) {
+        var DEBUG = nfRecaptcha.DEBUG;
+
+        DEBUG && console.group('nfRecaptcha.validateCaptcha --', 'Field:', fieldModel.id);
+
+        var fieldID      = fieldModel.id;
+        var fieldType    = fieldModel.get( 'type' );
+        var fieldSize    = fieldModel.get( 'size' );
+        var grecaptchaID = fieldModel.get( 'grecaptchaID' );
+
+        if ( this.isBusy ) {
+            DEBUG && console.log( 'Skipping; Busy' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        if ( ! this.isSubmitting ) {
+            DEBUG && console.log( 'Skipping; Not Submitting' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        if (
+            fieldType !== 'recaptcha' ||
+            fieldSize !== 'invisible' ||
+            fieldModel.get( 'clean' )
+        ) {
+            DEBUG && console.log( 'Skipping; Not reCAPTCHA Field' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        if ( grecaptchaID == null ) {
+            DEBUG && console.log( 'Skipping; Missing reCAPTCHA Widget ID' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        this.isBusy = true;
+
+        var fieldValue    = fieldModel.get( 'value' );
+        var fieldOldValue = fieldModel.get( 'old_value' );
+        DEBUG && console.log( 'New Value:', fieldValue );
+        DEBUG && console.log( 'Old Value:', fieldOldValue );
+
+        nfRadio.channel( 'fields' ).request( 'remove:error', fieldID, 'required-error' );
+
+        if ( fieldOldValue != null && fieldValue ) {
+            fieldModel.set( 'old_value', null );
+
+            this.isBusy = false;
+            DEBUG && console.log( 'CAPTCHA Validated' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        fieldModel.set( 'old_value', fieldValue );
+
+        var formModel = nfRadio.channel( 'form-' + fieldModel.get( 'formID' ) ).request( 'get:form' );
+        if ( ! formModel ) {
+            this.isBusy = false;
+            DEBUG && console.log( 'Skipping; Missing Form Model' );
+            DEBUG && console.groupEnd();
+            return;
+        }
+
+        nfRadio.channel( 'fields' ).request(
+            'add:error',
+            fieldID,
+            'recaptcha-processing',
+            formModel.get('settings').recaptchaProcessing
+        );
+
+        try {
+            DEBUG && console.log( 'Attempting to execute reCAPTCHA' );
+            nf_reprocess_recaptcha( grecaptchaID );
+        } catch ( e ) {
+            this.isBusy = false;
+            console.warn( 'Notice: Error trying to execute grecaptcha.' );
+            DEBUG && console.log( 'Caught error:', e );
+        }
+
+        DEBUG && console.groupEnd();
+    }
 } );
 
+/** @var {boolean} - Display debug information in console. */
+nfRecaptcha.DEBUG = false;
+
 var nfRenderRecaptcha = function() {
 	new nfRecaptcha();
 }

nf-mp-front-end.js.diff

#
# Tested with Ninja Forms Multo Part v3.0.26
#
--- assets/js/min/front-end.js
+++ assets/js/min/front-end.js
@@ -1,3 +1,3 @@
-!function(){var e,t,n;!function(i){function r(e,t){return y.call(e,t)}function o(e,t){var n,i,r,o,l,s,c,a,h,f,u,d=t&&t.split("/"),g=v.map,m=g&&g["*"]||{};if(e&&"."===e.charAt(0))if(t){for(e=e.split("/"),l=e.length-1,v.nodeIdCompat&&x.test(e[l])&&(e[l]=e[l].replace(x,"")),e=d.slice(0,d.length-1).concat(e),h=0;h<e.length;h+=1)if("."===(u=e[h]))e.splice(h,1),h-=1;else if(".."===u){if(1===h&&(".."===e[2]||".."===e[0]))break;h>0&&(e.splice(h-1,2),h-=2)}e=e.join("/")}else 0===e.indexOf("./")&&(e=e.substring(2));if((d||m)&&g){for(n=e.split("/"),h=n.length;h>0;h-=1){if(i=n.slice(0,h).join("/"),d)for(f=d.length;f>0;f-=1)if((r=g[d.slice(0,f).join("/")])&&(r=r[i])){o=r,s=h;break}if(o)break;!c&&m&&m[i]&&(c=m[i],a=h)}!o&&c&&(o=c,s=a),o&&(n.splice(0,s,o),e=n.join("/"))}return e}function l(e,t){return function(){var n=P.call(arguments,0);return"string"!=typeof n[0]&&1===n.length&&n.push(null),d.apply(i,n.concat([e,t]))}}function s(e){return function(t){return o(t,e)}}function c(e){return 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Marionette.ItemView.extend({template:"#tmpl-nf-mp-header",fullProgressBar:!1,initialize:function(e){this.listenTo(this.collection,"change:part",this.reRender),this.listenTo(this.collection,"change:errors",this.reRender),this.listenTo(i.channel("forms"),"before:submit",this.fillProgressBar)},reRender:function(){this.model=this.collection.getElement(),this.render()},templateHelpers:function(){var e=this;return{renderPartTitle:function(){if(void 0===e.collection.formModel.get("settings").mp_display_titles||0==e.collection.formModel.get("settings").mp_display_titles)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-part-title");return 1<_.invoke(e.collection.getVisibleParts(),"pick",["title","errors","visible"]).length?t({title:this.title}):""},renderBreadcrumbs:function(){if(void 0===e.collection.formModel.get("settings").mp_breadcrumb||0==e.collection.formModel.get("settings").mp_breadcrumb)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-breadcrumbs"),n=_.invoke(e.collection.getVisibleParts(),"pick",["title","errors","visible"]);return 1<n.length?t({parts:n,currentIndex:e.collection.getVisibleParts().indexOf(e.model)}):""},renderProgressBar:function(){if(void 0===e.collection.formModel.get("settings").mp_progress_bar||0==e.collection.formModel.get("settings").mp_progress_bar)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-progress-bar"),n=e.collection.getVisibleParts().indexOf(e.model),i=e.fullProgressBar?100:n/e.collection.getVisibleParts().length*100;return 1<e.collection.getVisibleParts().length?t({percent:i}):""}}},events:{"click 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r.indexOf(e.model)!=r.length-1&&(n=!0),0!=r.indexOf(e.model)&&(i=!0),n||i?t({showNext:n,showPrevious:i,prevLabel:e.collection.formModel.get("mp_prev_label")||nfMPSettings.prevLabel,nextLabel:e.collection.formModel.get("mp_next_label")||nfMPSettings.nextLabel}):""}}}})}),n("views/formContent",["views/header","views/footer"],function(e,t){return Marionette.LayoutView.extend({template:"#tmpl-nf-mp-form-content",regions:{header:".nf-mp-header",body:".nf-mp-body",footer:".nf-mp-footer"},initialize:function(e){this.formModel=e.formModel,this.collection=e.data,this.listenTo(this.collection,"change:part",this.changePart),this.listenTo(this.collection,"change:visible",this.renderHeaderFooter)},onRender:function(){this.header.show(new e({collection:this.collection,model:this.collection.getElement()}));var n=i.channel("formContent").request("get:viewFilters"),r=_.without(n,void 0),o=r[1];this.formContentView=o(),this.body.show(new this.formContentView({collection:this.collection.getElement().get("formContentData")})),this.footer.show(new t({collection:this.collection,model:this.collection.getElement()}))},renderHeaderFooter:function(){this.header.show(new e({collection:this.collection,model:this.collection.getElement()})),this.footer.show(new t({collection:this.collection,model:this.collection.getElement()}))},changePart:function(){this.body.show(new this.formContentView({collection:this.collection.getElement().get("formContentData")}));var e=jQuery(this.body.el).closest(".nf-form-cont").offset().top;jQuery(window).scrollTop()>e-50&&jQuery(window).scrollTop(e-50)},events:{"click .nf-next":"clickNext","click .nf-previous":"clickPrevious"},clickNext:function(e){e.preventDefault(),this.collection.next()},clickPrevious:function(e){e.preventDefault(),this.collection.previous()}})}),n("models/partModel",[],function(){return Backbone.Model.extend({fieldErrors:{},defaults:{errors:!1,visible:!0,title:""},initialize:function(){this.filterFormContentData(),this.listenTo(this.get("formContentData"),"change:errors",this.maybeChangeActivePart),this.fieldErrors[this.cid]=[],this.on("change:visible",this.changeVisible,this),this.set("order",Number(this.get("order")))},filterFormContentData:function(){if(this.get("formContentData")){var e=this.get("formContentData"),t=i.channel("formContent").request("get:loadFilters"),n=_.without(t,void 0),r=n[1],o=0==e.length;if(void 0===t[4]&&_.isArray(e)&&0!=e.length&&void 0!==e[0].cells){var l=[],s=_.pluck(e,"cells");_.each(s,function(e){var t=_.flatten(_.pluck(e,"fields"));l=_.union(l,t)}),e=l,this.set("formContentData",e)}this.set("formContentData",r(e,this.collection.formModel,o,e))}},maybeChangeActivePart:function(e){0<e.get("errors").length?(this.set("errors",!0),this.fieldErrors[this.cid].push(e.get("key")),this.collection.getElement()!=this&&this.collection.indexOf(this.collection.getElement())>this.collection.indexOf(this)&&this.collection.setElement(this)):(this.fieldErrors[this.cid]=_.without(this.fieldErrors[this.cid],e.get("key")),0==this.fieldErrors[this.cid].length&&this.set("errors",!1))},validateFields:function(){this.get("formContentData").validateFields()},changeVisible:function(){this.get("visible")?this.get("formContentData").showFields():this.get("formContentData").hideFields()}})}),n("models/partCollection",["models/partModel"],function(e){return Backbone.Collection.extend({model:e,currentElement:!1,initialize:function(e,t){this.formModel=t.formModel},getElement:function(){return this.currentElement||this.setElement(this.at(0),!0),this.currentElement},setElement:function(e,t){!(t=t||!1)&&this.partErrors()||(this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this)))},setNextElement:function(e,t){!(t=t||!1)&&this.partErrors()||(this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this)))},setPreviousElement:function(e,t){t=t||!1,this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this))},next:function(){return this.getVisibleParts().length-1!=this.getVisibleParts().indexOf(this.getElement())&&this.setNextElement(this.getVisibleParts()[this.getVisibleParts().indexOf(this.getElement())+1]),this},previous:function(){return 0!=this.getVisibleParts().indexOf(this.getElement())&&this.setPreviousElement(this.getVisibleParts()[this.getVisibleParts().indexOf(this.getElement())-1]),this},partErrors:function(){return void 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Marionette.Object.extend({initialize:function(){i.channel("condition:trigger").reply("show_part",this.showPart,this),i.channel("condition:trigger").reply("hide_part",this.hidePart,this)},showPart:function(e,t){e.set("alreadyTriggered",!0),this.changePartVisibility(e,t,!0),e.set("alreadyTriggered",!1)},hidePart:function(e,t){e.set("alreadyTriggered",!0),this.changePartVisibility(e,t,!1),e.set("alreadyTriggered",!1)},changePartVisibility:function(e,t,n){var i=Date.now();e.collection.mpResetFlag||(e.collection.mpResetFlag=i),e.collection.formModel.get("formContentData").findWhere({key:t.key}).set("visible",n),e.collection.each(function(t){t!=e&&(t.get("alreadyTriggered")||(t.checkWhen(),t.set("alreadyTriggered",!0)))}),i==e.collection.mpResetFlag&&(e.collection.invoke("set",{alreadyTriggered:!1}),e.collection.mpResetFlag=!1)}})}),n("controllers/renderRecaptcha",[],function(){return Marionette.Object.extend({initialize:function(){this.listenTo(i.channel("nfMP"),"change:part",this.changePart,this)},changePart:function(e,t){jQuery(".g-recaptcha").each(function(){var e=jQuery(this).data("callback"),t=jQuery(this).data("fieldid");"function"!=typeof window[e]&&(window[e]=function(e){i.channel("recaptcha").request("update:response",e,t)});var n={theme:jQuery(this).data("theme"),sitekey:jQuery(this).data("sitekey"),callback:e};grecaptcha.render(jQuery(this)[0],n)})}})}),n("controllers/renderHelpText",[],function(){return Marionette.Object.extend({initialize:function(){this.listenTo(i.channel("nfMP"),"change:part",this.changePart,this)},changePart:function(e,t){jQuery(".nf-help").each(function(){jQuery(this).jBox("Tooltip",{theme:"TooltipBorder",content:jQuery(this).data("text")})})}})}),n("controllers/loadControllers",["controllers/conditionalLogic","controllers/renderRecaptcha","controllers/renderHelpText"],function(e,t,n){return Marionette.Object.extend({initialize:function(){new e,new t,new n}})});var i=Backbone.Radio;t(["controllers/loadFilters","controllers/loadControllers"],function(e,t){(new(Marionette.Application.extend({initialize:function(e){this.listenTo(i.channel("form"),"before:filterData",this.loadFilters),this.listenTo(i.channel("form"),"loaded",this.loadControllers)},loadFilters:function(t){new e},loadControllers:function(e){new t},onStart:function(){}}))).start()}),n("main",function(){})}();
+!function(){var e,t,n;!function(i){function r(e,t){return y.call(e,t)}function o(e,t){var n,i,r,o,l,s,c,a,h,f,u,d=t&&t.split("/"),g=v.map,m=g&&g["*"]||{};if(e&&"."===e.charAt(0))if(t){for(e=e.split("/"),l=e.length-1,v.nodeIdCompat&&x.test(e[l])&&(e[l]=e[l].replace(x,"")),e=d.slice(0,d.length-1).concat(e),h=0;h<e.length;h+=1)if("."===(u=e[h]))e.splice(h,1),h-=1;else if(".."===u){if(1===h&&(".."===e[2]||".."===e[0]))break;h>0&&(e.splice(h-1,2),h-=2)}e=e.join("/")}else 0===e.indexOf("./")&&(e=e.substring(2));if((d||m)&&g){for(n=e.split("/"),h=n.length;h>0;h-=1){if(i=n.slice(0,h).join("/"),d)for(f=d.length;f>0;f-=1)if((r=g[d.slice(0,f).join("/")])&&(r=r[i])){o=r,s=h;break}if(o)break;!c&&m&&m[i]&&(c=m[i],a=h)}!o&&c&&(o=c,s=a),o&&(n.splice(0,s,o),e=n.join("/"))}return e}function l(e,t){return function(){var n=P.call(arguments,0);return"string"!=typeof n[0]&&1===n.length&&n.push(null),d.apply(i,n.concat([e,t]))}}function s(e){return function(t){return o(t,e)}}function c(e){return 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Marionette.ItemView.extend({template:"#tmpl-nf-mp-header",fullProgressBar:!1,initialize:function(e){this.listenTo(this.collection,"change:part",this.reRender),this.listenTo(this.collection,"change:errors",this.reRender),this.listenTo(i.channel("forms"),"before:submit",this.fillProgressBar)},reRender:function(){this.model=this.collection.getElement(),this.render()},templateHelpers:function(){var e=this;return{renderPartTitle:function(){if(void 0===e.collection.formModel.get("settings").mp_display_titles||0==e.collection.formModel.get("settings").mp_display_titles)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-part-title");return 1<_.invoke(e.collection.getVisibleParts(),"pick",["title","errors","visible"]).length?t({title:this.title}):""},renderBreadcrumbs:function(){if(void 0===e.collection.formModel.get("settings").mp_breadcrumb||0==e.collection.formModel.get("settings").mp_breadcrumb)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-breadcrumbs"),n=_.invoke(e.collection.getVisibleParts(),"pick",["title","errors","visible"]);return 1<n.length?t({parts:n,currentIndex:e.collection.getVisibleParts().indexOf(e.model)}):""},renderProgressBar:function(){if(void 0===e.collection.formModel.get("settings").mp_progress_bar||0==e.collection.formModel.get("settings").mp_progress_bar)return"";var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-progress-bar"),n=e.collection.getVisibleParts().indexOf(e.model),i=e.fullProgressBar?100:n/e.collection.getVisibleParts().length*100;return 1<e.collection.getVisibleParts().length?t({percent:i}):""}}},events:{"click .nf-breadcrumb":"clickBreadcrumb"},clickBreadcrumb:function(e){e.preventDefault(),this.collection.setElement(this.collection.getVisibleParts()[jQuery(e.target).data("index")])},fillProgressBar:function(e){this.fullProgressBar=!0,this.render(),this.fullProgressBar=!1}})}),n("views/footer",[],function(){return Marionette.ItemView.extend({template:"#tmpl-nf-mp-footer",initialize:function(e){this.listenTo(this.collection,"change:part",this.reRender)},reRender:function(){this.model=this.collection.getElement(),this.render()},templateHelpers:function(){var e=this;return{renderNextPrevious:function(){var t=Backbone.Radio.channel("app").request("get:template","#tmpl-nf-mp-next-previous"),n=!1,i=!1,r=e.collection.where({visible:!0});return r.indexOf(e.model)!=r.length-1&&(n=!0),0!=r.indexOf(e.model)&&(i=!0),n||i?t({showNext:n,showPrevious:i,prevLabel:e.collection.formModel.get("mp_prev_label")||nfMPSettings.prevLabel,nextLabel:e.collection.formModel.get("mp_next_label")||nfMPSettings.nextLabel}):""}}}})}),n("views/formContent",["views/header","views/footer"],function(e,t){return Marionette.LayoutView.extend({template:"#tmpl-nf-mp-form-content",regions:{header:".nf-mp-header",body:".nf-mp-body",footer:".nf-mp-footer"},initialize:function(e){this.formModel=e.formModel,this.collection=e.data,this.listenTo(this.collection,"change:part",this.changePart),this.listenTo(this.collection,"change:visible",this.renderHeaderFooter)},onRender:function(){this.header.show(new e({collection:this.collection,model:this.collection.getElement()}));var n=i.channel("formContent").request("get:viewFilters"),r=_.without(n,void 0),o=r[1];this.formContentView=o(),this.body.show(new this.formContentView({collection:this.collection.getElement().get("formContentData")})),this.footer.show(new t({collection:this.collection,model:this.collection.getElement()}))},renderHeaderFooter:function(){this.header.show(new e({collection:this.collection,model:this.collection.getElement()})),this.footer.show(new t({collection:this.collection,model:this.collection.getElement()}))},changePart:function(){this.body.show(new this.formContentView({collection:this.collection.getElement().get("formContentData")}));var e=jQuery(this.body.el).closest(".nf-form-cont").offset().top;jQuery(window).scrollTop()>e-50&&jQuery(window).scrollTop(e-50)},events:{"click .nf-next":"clickNext","click .nf-previous":"clickPrevious"},clickNext:function(e){e.preventDefault(),this.collection.next()},clickPrevious:function(e){e.preventDefault(),this.collection.previous()}})}),n("models/partModel",[],function(){return Backbone.Model.extend({fieldErrors:{},defaults:{errors:!1,visible:!0,title:""},initialize:function(){this.filterFormContentData(),this.listenTo(this.get("formContentData"),"change:errors",this.maybeChangeActivePart),this.fieldErrors[this.cid]=[],this.on("change:visible",this.changeVisible,this),this.set("order",Number(this.get("order")))},filterFormContentData:function(){if(this.get("formContentData")){var e=this.get("formContentData"),t=i.channel("formContent").request("get:loadFilters"),n=_.without(t,void 0),r=n[1],o=0==e.length;if(void 0===t[4]&&_.isArray(e)&&0!=e.length&&void 0!==e[0].cells){var l=[],s=_.pluck(e,"cells");_.each(s,function(e){var t=_.flatten(_.pluck(e,"fields"));l=_.union(l,t)}),e=l,this.set("formContentData",e)}this.set("formContentData",r(e,this.collection.formModel,o,e))}},maybeChangeActivePart:function(e){0<e.get("errors").length?(this.set("errors",!0),this.fieldErrors[this.cid].push(e.get("key")),this.collection.getElement()!=this&&this.collection.indexOf(this.collection.getElement())>this.collection.indexOf(this)&&this.collection.setElement(this)):(this.fieldErrors[this.cid]=_.without(this.fieldErrors[this.cid],e.get("key")),0==this.fieldErrors[this.cid].length&&this.set("errors",!1))},validateFields:function(){this.get("formContentData").validateFields()},changeVisible:function(){this.get("visible")?this.get("formContentData").showFields():this.get("formContentData").hideFields()}})}),n("models/partCollection",["models/partModel"],function(e){return Backbone.Collection.extend({model:e,currentElement:!1,initialize:function(e,t){this.formModel=t.formModel},getElement:function(){return this.currentElement||this.setElement(this.at(0),!0),this.currentElement},setElement:function(e,t){!(t=t||!1)&&this.partErrors()||(this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this)))},setNextElement:function(e,t){!(t=t||!1)&&this.partErrors()||(this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this)))},setPreviousElement:function(e,t){t=t||!1,this.currentElement=e,t||(this.trigger("change:part",this),i.channel("nfMP").trigger("change:part",this))},next:function(){return this.getVisibleParts().length-1!=this.getVisibleParts().indexOf(this.getElement())&&this.setNextElement(this.getVisibleParts()[this.getVisibleParts().indexOf(this.getElement())+1]),this},previous:function(){return 0!=this.getVisibleParts().indexOf(this.getElement())&&this.setPreviousElement(this.getVisibleParts()[this.getVisibleParts().indexOf(this.getElement())-1]),this},partErrors:function(){return void 0!==this.formModel.get("settings").mp_validate&&0!=this.formModel.get("settings").mp_validate&&(this.currentElement.validateFields(),this.currentElement.get("errors"))},validateFields:function(){_.each(this.getVisibleParts(),function(e){e.validateFields()})},getVisibleParts:function(){return this.where({visible:!0})}})}),n("controllers/loadFilters",["views/formContent","models/partCollection"],function(e,t){return Marionette.Object.extend({initialize:function(){i.channel("formContent").request("add:viewFilter",this.getformContentView,1),i.channel("formContent").request("add:loadFilter",this.formContentLoad,1)},getformContentView:function(t){return e},formContentLoad:function(e,n){if(!0==e instanceof t)return e;if(_.isArray(e)&&0!=_.isArray(e).length&&void 0!==_.first(e)&&"part"==_.first(e).type)var i=new t(e,{formModel:n});else var i=new t({formContentData:e},{formModel:n});return i}})}),n("controllers/conditionalLogic",[],function(){return Marionette.Object.extend({initialize:function(){i.channel("condition:trigger").reply("show_part",this.showPart,this),i.channel("condition:trigger").reply("hide_part",this.hidePart,this)},showPart:function(e,t){e.set("alreadyTriggered",!0),this.changePartVisibility(e,t,!0),e.set("alreadyTriggered",!1)},hidePart:function(e,t){e.set("alreadyTriggered",!0),this.changePartVisibility(e,t,!1),e.set("alreadyTriggered",!1)},changePartVisibility:function(e,t,n){var i=Date.now();e.collection.mpResetFlag||(e.collection.mpResetFlag=i),e.collection.formModel.get("formContentData").findWhere({key:t.key}).set("visible",n),e.collection.each(function(t){t!=e&&(t.get("alreadyTriggered")||(t.checkWhen(),t.set("alreadyTriggered",!0)))}),i==e.collection.mpResetFlag&&(e.collection.invoke("set",{alreadyTriggered:!1}),e.collection.mpResetFlag=!1)}})}),n("controllers/renderHelpText",[],function(){return Marionette.Object.extend({initialize:function(){this.listenTo(i.channel("nfMP"),"change:part",this.changePart,this)},changePart:function(e,t){jQuery(".nf-help").each(function(){jQuery(this).jBox("Tooltip",{theme:"TooltipBorder",content:jQuery(this).data("text")})})}})}),n("controllers/loadControllers",["controllers/conditionalLogic","controllers/renderHelpText"],function(e,t){return Marionette.Object.extend({initialize:function(){new e,new t}})});var i=Backbone.Radio;t(["controllers/loadFilters","controllers/loadControllers"],function(e,t){(new(Marionette.Application.extend({initialize:function(e){this.listenTo(i.channel("form"),"before:filterData",this.loadFilters),this.listenTo(i.channel("form"),"loaded",this.loadControllers)},loadFilters:function(t){new e},loadControllers:function(e){new t},onStart:function(){}}))).start()}),n("main",function(){})}();
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WP-NF-Fix-reCAPTCHA_V2.md

README: Fix eager execution/challenge of reCAPTCHA V2

When a reCAPTCHA field is configured as "invisible", Ninja Forms will execute grecaptcha.execute() when the form is rendered and in intervals of 110 seconds, regardless of the form's state. If reCAPTCHA determines a challenge is necessary, its appearance on page load is unexpected and confusing, and its potential recurrence is very annoying for users.

This patch replaces the interval callback with a more complex solution that involves interrupting the form submit with a temporary validation error (that displays "Processing…" error). When reCAPTCHA is done (checks and challenges completed), the temporary validation error is removed and the form is submitted to the server for final validation.

If you use Ninja Forms Multi-Part, you will have to remove its reCAPTCHA controller which is no longer needed with this patch.

Apply the following patches:

• Ninja Forms: nf-front-end-deps.js.diff
• Ninja Forms Multi-Part: nf-mp-front-end.js.diff

Ideally, Ninja Forms would implement support for a promise-based solution to allow for controllers to take their time with whatever needs to be processed.

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