GForm isSelected Issue

gfrom.php

/**
		* Returns the field inner markup.
		*
		* @since  Unknown
		* @access public
		*
		* @uses GF_Field_MultiSelect::is_entry_detail()
		* @uses GF_Field_MultiSelect::is_form_editor()
		* @uses GF_Field_MultiSelect::get_conditional_logic_event()
		* @uses GF_Field_MultiSelect::get_tabindex()
		*
		* @param array        $form  The Form Object currently being processed.
		* @param string|array $value The field value. From default/dynamic population, $_POST, or a resumed incomplete submission.
		* @param null|array   $entry Null or the Entry Object currently being edited.
		*
		* @return string The field input HTML markup.
		*/
		public function get_field_input( $form, $value = '', $entry = null ) {
			$form_id         = absint( $form['id'] );
			$is_entry_detail = $this->is_entry_detail();
			$is_form_editor  = $this->is_form_editor();

			$id       = $this->id;
			$field_id = $is_entry_detail || $is_form_editor || $form_id == 0 ? "input_$id" : 'input_' . $form_id . "_$id";

			$logic_event   = $this->get_conditional_logic_event( 'keyup' );
			$size          = $this->size;
			$class_suffix  = $is_entry_detail ? '_admin' : '';
			$class         = $size . $class_suffix;
			$css_class     = trim( esc_attr( $class ) . ' gfield_select' );
			$tabindex      = $this->get_tabindex();
			$disabled_text = $is_form_editor ? 'disabled="disabled"' : '';


			/**
			* Allow the placeholder used by the enhanced ui to be overridden
			*
			* @since 1.9.14 Third parameter containing the field ID was added.
			* @since Unknown
			*
			* @param string  $placeholder The placeholder text.
			* @param integer $form_id     The ID of the current form.
			*/
			$placeholder = gf_apply_filters( array(
				'gform_multiselect_placeholder',
				$form_id,
				$this->id
			), __( 'Click to select...', 'gravityforms' ), $form_id, $this );
			$placeholder = $this->enableEnhancedUI ? "data-placeholder='" . esc_attr( $placeholder ) . "'" : '';

			$size = $this->multiSelectSize;
			if ( empty( $size ) ) {
				$size = 7;
			}

			// Get a collection of all posts in the development post type
			$developments = new WP_Query([
				'post_type' => 'developments',
				'posts_per_page' => -1
			]);

			$choices 	= [];
			$newBuilds 	= [];
			$preOwned 	= [];

			// loop through the list and assign the development to either
			// a new build collection
			// or
			// a previously owned collection
			if ( $developments->have_posts() ) :
				while ( $developments->have_posts() ) : $developments->the_post();
					$development = new Development();
					$text = rd_get_gfrom_development_value( $development );

					$option = [
						'value' => $text,
						'text' => $text,
						'isSelected' => ( get_the_ID() == $_GET['ref'] ) ? true : false
					];

					if( $development->isNewBuild == true ) :
						$newBuilds[] = $option;
					else :
						$preOwned[] = $option;
					endif;
				endwhile;
			endif;
			wp_reset_postdata();

			// add a option group heading
			// and all the options if there are any developments in the collection
			if( count($newBuilds) > 0 ) :
				$choices[] = [
					'value' => 'optgroup',
					'text' => 'Developments',
					'isSelected' => false,
				];
				$choices = array_merge($choices, $newBuilds);
			endif;

			// add a option group heading
			// and all the options if there are any developments in the collection
			if( count($preOwned) > 0 ) :
				$choices[] = [
					'value' => 'optgroup',
					'text' => 'Previously Owned',
					'isSelected' => false,
				];
				$choices = array_merge($choices, $preOwned);
			endif;

			// set choices into the gravity form var
			$this->choices = $choices;

			return sprintf( "<div class='ginput_container ginput_container_multiselect ginput_container_development_multiselect'><select multiple='multiple' {$placeholder} size='{$size}' name='input_%d[]' id='%s' {$logic_event} class='%s' $tabindex %s>%s</select></div>", $id, esc_attr( $field_id ), $css_class, $disabled_text, $this->get_choices( $value ) );
		}
	}