The layout changed for some reason.

[Azureth]

This happened a few days ago. I have it set for the dark theme and for videos to display in the wider screen. Yet for some reason it totally changed it. The layout is white again and the screen is back to being smaller.

 

[Shendijiro]

Moved to Youtube Chat, Gossip and Help.

It happened to me before and it fix later on, i think is something to do with the cookies on the browser.