Starting a few days ago, whenever I open a youtube video in fullscreen, it only shows me a blank background (no buttons or anything) but the video continues to play (audio only).
Twitch has been facing a similar problem. When I open the home page I am able to see it for a flash while the page is loading but then it acts the same way youtube fullscreen has been, just giving me a blank screen. Whenever I use a link going directly to a stream, I am able to see it but only when in theater mode, otherwise the same blank screen appears as the audio continues to play.