203X

Today I did the same thing again as when the error occured; cleared all caches in browser, cleared all WP caches (WP supercache) and activated Akismet again (with the added code for debug in config PHP file). Started a new post but the error was gone. No error in java dev console view (as you told me to look there). I have no clue what’s going on – the interface is working as it should. Thanks anyway, Sir.

• This reply was modified 8 years, 5 months ago by 203X.

Same here. WordPress 4.6.1, latest updates all installed for plugins. If Akismet and Jetpack are active at the same time I can not use add media button and switch from visual to text layout in posts.
Deactivated Akismet now cuz Jetpack is more important.

deleted.