[sonic00]

 It's not a bug, fallback are shown during textures are loaded or if artworks are not found, it's depending of your hardware, on my two machines, I never see them, textures are instantly loaded. 

Thx for the quick reply, much appreciate it. Ok, if the fallback textues are always shown before the actual Artwork is loaded it makes sense. I only use a RPi2 as hardware so its not the most powerfull device, that could explain why I see the fallback textures it for a split second, but its strange because  I never notice this behaviour on the Video Library, but its quite noticeable on the Music Library (and Video posters are usual a bit larger than Music covers).

But again, thank you very much for the clarification. Have a nice day/night