Advanced Custom Fields: support shortcodes in each field's Message

functions.php

<?php 

/**
 * ACF: render shortcodes in Message fields, except on the ACF settings screen.
 *
 * Does work on ACF Options pages, just not ACF Settings pages.
 *
 * @link https://gist.github.com/cliffordp/bef4f1c5054555991cccccb058796739 This snippet.
 */
add_filter( 'acf/load_field', function ( array $field ) {
	global $plugin_page;

	if (
		! function_exists( 'acf_get_options_page' )
		|| ! function_exists( 'acf_is_screen' )
		|| ! is_admin()
		|| empty( $field['type'] )
		|| 'message' !== $field['type'] // Only for Message field types.
	) {
		return $field;
	}

	$options_page = acf_get_options_page( $plugin_page );

	if (
		! empty( $options_page )
		|| ! acf_is_screen( 'acf-field-group' )
	) {
		if ( ! empty( $field['message'] ) ) {
			$field['message'] = do_shortcode( $field['message'] );
		}
	}

	return $field;
} );