Syncing covers not working properly

Sorry, 1 new finding. I don’t think I will find more stuff.

Alwin gave me a hint today:

So I didn’t know what is exactly meant so I did 1 test with a strange result.
The result is: An entry on Desktop that was marked as Custom is not custom anymore, but also no cover in Web. Again I have a reproduction path:

  1. Web: choose a movie which has a custom cover. Check if Mobile or Desktop the entry is also marked with a custom cover. My example:
  2. Web: Remove the Front cover and save.
  3. Now sync Mobile and Desktop with Cloud. Result is the Custom Cover true, switched to false on mobile and Desktop. So syncing true → false works when the initiator is Web. But the cover is also removed on Web. Which makes sort of sense because I removed the cover.
  4. On Web it is not possible to switch to the Cover from Core. In the Update from Core screen the Covers are missing. If I would only use Web, I am stuck. No way to “correct” the issue if the right cover is not available with the Find Online feature.
  5. When I enter a new entry in Web and immediatly remove the cover. Then sync Desktop / Mobile with cloud. The new entry is loaded on Desktop/Mobile with the default Cover from Core. So it works fine on those 2 apps.

So Desktop and Mobile think it is not Custom (Web triggered the change). But Web is not showing anything.

Only way to get back a cover is to use Find Online/Upload cover in Web, or make it custom again from Mobile/Desktop.

Now I have the feeling I checked all apps and given you all reproduction paths I could find in this whole mystery.