Greasy Fork is available in English.
Moves the YouTube video to the top of the website and fill the window with the video player.
< Resize YT To Window Sizeについてのフィードバック
In Chrome? v126 should fix it. There was an older report, but either I never tested Chrome or YouTube wasn't sending me the updated site.
In full screen mode scroll bar not disappear.
https://postimg.cc/VrMndYrq