neoweiter

If it can help someone. I figured out that by creating a custom block with ACF plugin, it will force the editor to stay in non-iframed mode, thus removing that annoying resize handle.

Here is an example of custom block code to place in functions.php :

/**
 * WP EDITOR WORKAROUND 
 * add fake custom block to force gutenberg editor to stay in non-iframed mode
*/
if( function_exists('acf_register_block_type') ){
	add_action('acf/init', function(){
		acf_register_block_type([
			'name' 		  => 'my_custom_block',
			'title' 	  => 'Custom Block',
			'mode' 		  => 'edit'
		]);
	});
}

I have the same problem. It takes about 20sec for wordpress to add a new content (post, page..). Every other section from the admin is super fast. The problem disappears when I disable Sucuri. Does someone know how to fix this ? Is there a feature in Sucuri that slows the add of new content ?