I am also on openSUSE Tumbleweed, but using Flatpak Firefox.
Perhaps you can try disabling hardware acceleration in Firefox to see if it chinges anyting.
I’ll give it a shot. I don’t use flatpaks, but I think I’ve already disabled hardware acceleration for a previous issue? I’ll report back once I’ve checked/tried it out.
I am also on openSUSE Tumbleweed, but using Flatpak Firefox.
Perhaps you can try disabling hardware acceleration in Firefox to see if it chinges anyting.
Reporting back, you were absolutely correct. Hardware acceleration was turned back on, and turning it off fixed the problem.
I’ll give it a shot. I don’t use flatpaks, but I think I’ve already disabled hardware acceleration for a previous issue? I’ll report back once I’ve checked/tried it out.