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.

Nope, just uBlock. If I disable uBlock before loading the page everything works fine as well, so I’m pretty sure it’s uBlock.

But I’m on Linux (openSuse Tumbleweed) and have had some interesting “distro specific” bugs in recent months, so I’m chalking it up to “my OS + Firefox” and not “uBlock”

Mine isn’t working flawlessly with this exact set up, but it’s just forcing me to refresh the page every time I load a new video. Still no ads.