No library contents shown, says "Loading" unusually long

I am not sure if it was really the same issue, but I just sent you logs and a screen video of something which looked similar.

There is something generally wrong with the app now - I recorded logs for another issue before. The logs got very big (28 MB unzipped) and also were attached to the previous logs from a couple of days before. I was not able to use the “sent logs to support” function anymore. Now I deleted all previous logs, but the app is still in the stte shown in the video.