Please read the Master List at the top of this forum. You have a known JQuery problem.
The best advice we can give you is to update all your plugins and themes to the latest versions by their vendors. Plugin and theme authors should be looking to the JS libraries they use for fixes, and including those newer versions of the affected libraries in their code.
All my themes and plugins are up to date, Visual Editor still not working.
Where did you download the theme from?
I am having the exact same issue as elimariaaaa. The problem started about a month ago after an update to WordPress. Any time you load a page to modify it, the TinyMCE editor, “Visual” tab, is blank. If I click on the “Text” tab, the HTML is properly displayed and can be modified and saved correctly. If I click back on the “Visual” tab after clicking the “Text” tab, then the TinyMCE editor gets populated but any changes made are not saved.
I have tried installing they TinyMCE Advanced and WP Edit plugins and both behave the same way. I have disabled all plugins and switched to the default theme with no luck. I have tested in FireFox, Chrome and IE on multiple computers, from multiple locations, some of which had never been to the wp-admin page for my site. The only significant clue I have found is that the FireFox Web Console displays the following error message when editing any page, “Error: no such method ‘instance’ for autocomplete widget instance”.
Any light you can shed on this situation would be greatly appreciated.
Hello,
Maybe you just need to upgrade the version of jquery-ui.js -> http://jqueryui.com/download/
I use this library in my template and since an update of wordpress, the visual editor (tinymce) was broken. After an update of that file, no more problem.
So, check in you template and replace the file jquery-ui.js and/or jquery-ui.min.js
Good luck 😉
Here are the technical details behind the mentioned jQuery issue: https://wordpress.org/support/topic/read-this-first-wordpress-45-master-list?replies=7&view=all#post-8271654
In short, a number of developers were using jQuery improperly (against documented standards), the latest version of jQuery closed the loophole they were using, and each new version of WordPress includes the latest version of jQuery.
The link above both details exactly what happened and how to fix it, though usually the quick fix is to make sure that you’re using the latest version of the affected theme/plugin … or find a better one. 😉
