Hi!
I just wanted to post here what I had to do to recover the screen capture option of OBS under Wayland when it disappears. I see that this is a rather common situation with no practical / reproducible solution and, after days of tinkering, I managed to recover it for my particular scenario.
When (i) it was working on your computer, (ii) you neither manually changed any pipewire, wireplumber, wayland configuration files nor XDG variables and (iii) if other users have it available, then wipe ~/.cache/* and ~/.local/state/*, log off and then log on again:
rm -rf ~/.local/state/*
rm -rf ~/.cache/*
If anyone can help us narrow this down to the specific files or directories under those two above, please leave a comment.
This happened to me under KDE and since Fedora 41, and could not solve it until after upgrading to Fedora 42