Ubuntu 20.04, Tribler 7.5.1, just left it for some time on the "Downloads" screen.

Buttons on the left a clickable still. The Core runs fine.
:shrug:
that happens when run with python3.8, was there for a while in 7.5 branch dont know why though.
So, it is not just my machine. @hbiyik , thanks for reporting.
I observed that this only happens when there is a download in downloading state
No this only happens when i minimise the window and maximise again, dont know why though. My qt version is 5.14.1
Hmm interesting. Sounds like something Qt-related. Does it happen everytime for you?
yes, i can provide remote session if you want
Haven't seen it in a while. I suspect this is the result of some incompatibility between PyQt bindings and Debian QT libs. Closing it for now. Feel free to reopen as necessary.
yes it is fixed in latest devel.
oh no, it is there again on devel branch