SOLVED: Jellyfin doesn't display favourites properly

[Efficient_Good_5784]

Not in my case. In my case, going to the actual favourites behaves as I described above. There are currently 4 of my current 16 'eligible' movies showing.
https://imgur.com/a/LapNvlw

I don't know this screenshot as on all clients I've tried (Web interface, JMP, Android TV, Android, iPhone) the Favourites page doesn't look like in your screenshot.

You need to click on the name of the video types in the favorite tab to get to that view.

My guess, as @qwerty12 points out, is that something is causing the favorites to only apply in Kodi but not Jellyfin.