Good Evening All,
I was watching Jeff livestream Modern Warfare this evening (December 9) in fullscreen mode. When I exited fullscreen mode, the video disappeared and the browser was only displaying the chat window. The audio from the stream was still playing however, and chat was still updating. I was able to reproduce this issue every time I went fullscreen and then exited. A refresh of the tab reset everything back to normal. I've attached an image of what the browser looks like when exiting fullscreen.
Browser: Chrome 64-bit Build 78.0.3904.108