Display is not working

[LexPendragon]

Up until a few days it was fine, but recently the developer build in Firefox on Linus stopped working for me. I was able to install it to a different Linux workstation on Firefox, but did not see this issue.

I attempted to remove and replace it, and even found the button to reset settings, but that didn't seem to fix anything.

I can find three distinct problems. The first is home page, the header is missing (including the search bar and the gear to access the YouTubeCenter settings.)

The second is the YouTubeCenter Settings itself:

The third is a video page, where nothing displays except shadows:

[Kierne]

I'm getting a similar failure using the userscript with TamperMonkey on Chrome. Youtube page loads as just a white screen. I can hear the audio of the video but there's nothing but a blank white screen. My Youtube Center settings page looks the same as the above screenshot, all compressed and mangled.

[Kierne]

This issue seems to be related to the coming overhaul of the Youtube UI. I'd somehow gotten opted-in to it. Once I went back to "classic" Youtube everything started working again.

[LexPendragon]

How did you go back to classic?

[Kierne]

It was an option at the bottom of my Youtube settings dropdown when I clicked on my profile image.

[LexPendragon]

Thanks!

(For anyone else, included image. It's the last option.)