Fullscreen mode at musescore.com is broken. It shows small sheets and huge padding taking almost third of height

Hello. Few weeks ago I was going to play piano, opened musescore.com, after pressing "Toggle Fullscreen" button noticed scores appears small, and page has huge empty space. Zooming in browser does not help.
I checked it with Firefox 115 on MacOS and Google chrome on chromeos and I got the same behaviour.
Before music sheet had height of full screen.
It can be fixed easily in developers tools by tweaking styles, but this solution is not for everyday using.

I would like to ask developers to fix this issue because it's really makes musescore.com useless for using as sheet for playing music if you don't use TV as screen not have eagle's sight