Strange Youtube Videos UI

Hello! From yesterday the youtube videos they look like this:



I am the only?

Any help ?

Not clear what you mean do you mean the new optional dark them?

Samuria said:

Not clear what you mean do you mean the new optional dark them?

Hey. No! If i post a youtube trailer here the video if you see have black bars on top, and in the side!

the video like its not full screen. This happen when i post it to a forums!

I cant understand...No one have this problem ?

EDIT: I see here a lot peoples have this bug: https://productforums.google.com/for...!forum/youtube

In You tube have you got dark theme on and is it only HD videos?

No i have the light theme!

Just testing how are you adding the video?

Here's an HD test using your example from post #4.



It looks full screen to me in Firefox and Edge. What browser are you using?

Seems OK to me. . . .



.