I can repro those buggy category settings. Same problem with the dropdown for journal.
I guess this needs an observer or a @discourseComputed @jumagura
Let’s go back to the original problem and let’s see if I can summarize it correctly.
You are unable to post in categories that have the custom wizard set to replace the new topic composer. (That’s desired behavior although we recently fixed a bug!)
But you also have problems uploading images in the same categories?