We've seen this on select AMD (https://bugzil.la/1417442) and Nvidia (https://bugzil.la/1422850) video cards. What GPU and driver version are you running?
I am using Intel, but Nvidia. On my current machine (Windows) I have a GeForce GTS 450 and the driver version is 23.21.13.8813. The linux one is Arch and has a 1060 Max Q, but I'm not at that computer and don't know the driver. Maybe selection bias, but I think it happens much less on the linux computer.
Too late to make an edit, but I am still experiencing the issue on the Windows version and FF58
https://screenshots.firefox.com/5GyCe8xjvqM7XVYj/www.faceboo...
Doh! Missed your followup. Looks like the exact same card and driver version are mentioned in Bug 1422850 (https://bugzil.la/1422850), and that disabling hardware acceleration should temporarily fix it.
I'd suggest signing into Bugzilla and following that bug so you get email updates when it changes status.
Hey @godelski, I had that issue in Firefox 57, but it seemed to have gone away with 58. Just FYI - I tried altering a bunch of `about:config` non-default settings, but none of them helped. Thanks.
Thanks for the reply. I edited my comment to note that I was experiencing this under 57. I don't know if it will continue under 58 because it seemed more like a random issue, but it is good to know I'm not the only one.
Re:Firefox 58
by robin_reala on Tuesday January 23, 2018 @03:22PM
(#16217279)
I guess this is bug https://bugzilla.mozilla.org/show_bug.cgi?id=1417442 ? If so that looks like it’ll be fixed in 59.
Edit: Experienced this under FF57, unknown under 58 because I just updated it.
This also usually happens with things like Facebook videos, but would less often happen with Youtube.