tinymce is not defined – endless spinner

This error would indicate that global window.tinymce object is not available on the post editor screen — that would be weird. Unless the Classic Editor plugin has drastically changed.

Can you send me a screenshot of your post editor section? Here is mine with the “tiny” editor. https://imgur.com/642vd50

What?!

Gimme a minute… now I have to figure out how to disable tiny editor, then use an if else clause to check for when TinyMCE is missing.

How did you prevent TinyMCE from attaching to the #rcno_book_description element?

My solution is just to do the if else check but I don’t know if I’d do this in multiple places because I don’t know how you did this in the first place.

Ohhh! I was thinking I’ve seen a setting like that somewhere… gimme a minute.