Unable to Edit a Post with Standard WordPress Editor

Overview of the Issue

When creating a post with the standard WordPress editor, after publishing and then going back to editing the post; adding a new block does not work.

The JavaScript console shows the following error:

ReferenceError: edit_form_change is not defined[Learn More] post.php:4720:21

This issue is fixed. Updating to the latest version solves it on your site, so you only need this workaround if you can’t update yet.

This will be fixed in the upcoming version. Until then, you can use the following steps to resolve the issue:

Locate the class-wpml-translate-independently.php file, found in the ../wp-content/plugins/sitepress-multilingual-cms/classes/ folder.
Edit the file with a text editor.
Scroll to line 12 and find the following line: add_filter( 'tiny_mce_before_init', array( $this, 'add_tiny_mce_change_detection' ), 999, 1 );
Comment out (prepend a //) or delete this line.

If updating doesn’t fix it, ask a support question and we’ll look into it with you.