Photos taken from a deleted creation can no longer be used as thumbnails.
So we have all probably hit the creation limit, or perhaps that's only me, but there is an issue with photos.
Say for instance, you want to make a game thumbnail, so you get a new creation, take the photo, then just don't save the level. The photo appears when you go to your gallery, and it's saved to your system, but does not appear when selecting a cover photo. I know this is a small issue, but it would be nice to see it solved. (or notified of a solution, either works!)
AdminQA Team (QA, Media Molecule) commented
The issue you have reported I can confirm has been bugged.
Thank your for your help Lara L