So I went to YouTube to browse and get greeted with this on my homepage.

What the hell? I'm a little confused, so I go to a video.

Awesome, it's gone! Let's look at the comments on this delightful video!

FFFFFFFFFFFFFFFFUUUUUUUUU-
It seems to be a massive white box exactly the dimensions and location of the video player floating on the page. It stays behind the video, but covers anything else. I already tried disabling my YouTube theme, disabling Adblock, and restarting my browser.
Before, I think YouTube was just trying to annoy me with the small changes like the subscriptions bar, but now I think they're actively trying to piss me off.