Fix for Advanced Custom Fields high priority

form-gutenberg.php

// Move elements around screen.

acf.addAction('prepare', function(){

	// Use setTimeout to make sure field is loaded

	setTimeout(function(){

		// Move #acf_after_title-sortables after 
		// Post Title box and add classes and css for styling 
		// and presentation

		$('.editor-post-title').after( 
			$('#acf_after_title-sortables')
					.addClass('wp-block')
					.css('margin', '20px auto 40px') 
			);
	}
	, 1000);


	// On save create copy of #acf_after_title-sortables and inset in #poststuff

	$(document).on('click','.editor-post-publish-button', function(){

		// Check if container in postbox is created
		
		if($('#poststuff .postbox-container #acf_after_title-sortables-copy').length){
			
			$('#poststuff .postbox-container #acf_after_title-sortables-copy').html(

				// Update form with data

				$('#acf_after_title-sortables').html()
			);

		}else{

			// Create clone of #acf_after_title-sortables and insert in #poststuff

			$('#acf_after_title-sortables')
					.clone()
					.attr('id','acf_after_title-sortables-copy')
					.hide()
					.appendTo( $('#poststuff .postbox-container') );
		}

	});

}, 1);