I was attempting to delete my world and had to delete some manuscripts to do so. However when I did, the page still said I needed to delete a manuscript that no longer existed. Reloading didn't help so I made a new manuscript and immediately deleted it, only to be met with 2 manuscripts needing to be deleted that no longer existed.
1. Create 1 manuscript in a world (exactly 1 was in the world I tried to delete) 2. Go to configuration and select "delete world" 3. Delete the created manuscript. 4. Return to the configuration screen and attempt to delete that world again.
Tried waiting a couple days, just in case. No joy... :(
Experiencing the same issue/bug