Reply To: WYSIWYG Field not swapping between editor modes

Hi,

I've just tried your code and it works for me. Here is my screenshot:

https://i.imgur.com/JdbBHX7.png

I think the problem might come from another part that has JavaScript error. Any JS error can breaks the execution of other JS, which might include the JS for the editors. Can you add these lines to wp-config.php and see what's in the console:

define( 'WP_DEBUG', true );
define( 'SCRIPT_DEBUG', true );
define( 'CONCATENATE_SCRIPTS', false );