3.4 update broke visual editor

Have you tried:

– deactivating all plugins (yes, all) to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s). If you can’t get into your admin dashboard, try resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.

– switching to the Twenty Eleven theme to rule out any theme-specific problems.

Thanks! I used my intuition and started deactivating plugins I suspected – got it right on my second try – it was the LiveJournal Crossposter.

https://iskariot.ru/wordpress/remix/#lj-crosspost

Thanks again!

-Catherine

got the same problem. deactivated all my plugins and it did help some pages yet not all:
– some small pages that already showed in edit mode but without visual editor now are completely visual as it should
– other bigger pages that even didn’t go to edit mode now are in edit mode but still without visual editor and inactive html editor. if I select all in wysiwyg mode then I get to see html content, see https://cred-it.com/voorbeeld-pagina/screenshot-editor-3

switched to Twenty Eleven theme but no effect there.

what else can I try?

[ Please do not bump, that’s not permitted here. ]

foun the solution here:
https://www.ads-software.com/support/topic/visualhtml-toggle-no-longer-works-in-33/page/2?replies=44 :

Hi Sebaztian,

I have experienced problems and all of the solutions offered didn’t work. What DOES WORK for me is to change the WordPress language define settings in the wp-config.php file. My problem was that my install language was defined as German and it caused problems. The moment I defined the language as English (or any other language apart from German), the problem went away. As far as I know, there is no language defined in the usual wp-config and so the system defaults to ENglish (I could be wrong).

Go into the wp-config file and insert:
define (‘WPLANG’, ‘xx_XX’);

changing xx_XX to the language you want. If there are problems change it to ENglish (en_EN)

You can see your language setting here:
https://codex.www.ads-software.com/Installing_WordPress_in_Your_Language

According to sources, WordPress is aware of this and is looking into it.

Hope it works for you!

Did work for me. Not only repaired my visual editor but my change header problems as well.
Thanks so much!

So all of you who have a non-English installation of WP beware! just change it back to en_EN if you know any English! and even if you don’t. ;-0

Check your htaccess file to make sure something isn’t being rewritten for the \wp-includes directory. Start empty if you have to.

Meh! I’m having this issue on an English Career and job site

Not sure what to do as the guys who created the custom theme started from twenty eleven…

IE works fine (supprisingly! for once :))

Should I get the guys to redo the code? I deactivated the usual suspects artiss, TinyMCE, so on and so forth but without luck.

Have you tried:

– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).

– switching to the Twenty Eleven theme to rule out any theme-specific problems.

– resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.

– re-uploading all files & folders – except the wp-content folder – from a fresh download of WordPress.