I am having the same problem. Just upgraded to 5.2 and lost the editor. Even if I choose the text editor I cannot even get a cursor in the box to show up let alone the editors toolbox. I have no commerce plugins and no text editor plugins either in WP. BTW the WP text editor toolbox shows up and functions perfectly. I have a paid membership site and the forum is now useless until I figure this out. ANYONE please help offer some solutions. All was fine until the upgrade and as I understand it, I cannot roll back to the previous version or I would.
Thanks