I have the same problem and I added: define('SCRIPT_DEBUG',true);
to wp-config.php file. But, the problem persists.
The editor is back with toolbar. But, there’s nothing on the toolbar. No icons, no shortcuts.
I found these error:
Uncaught TypeError: Cannot read property 'length' of undefined
jQuery.extend.each
e.widget
(anonymous function)
(anonymous function)
Anyone can help?