[Bug] Video will load and play, but white screen all around it and won't let me fullscreen

restarts and happens in both chrome and firefox. any fixes?

FIX:

From u/SaturnStar365 below:

**This seems to happen whenever you open a video through your email or open it in a new tab. It just started up so no fixes yet. Just open a new youtube tab and look up that video you want to watch. Watch it in that tab. It'll load normally.**