Two displays - Menu Bar disappears in fullscreen I have two displays: My MacBook Pro and and external display (primary screen). When watching a YouTube video in fullscreen mode, the Menu Bar on the external screen disappears. The Menu Bar contains the clock, which I want to remain visible.

How can I prevent the Menu Bar from disappearing while in full-screen mode?
When using full-screen the application will take over the entire screen space.  Unfortunately there doesn’t seem to be a way to make it always display.  You should, however, be able to move your cursor to the top of the screen and make the menu bar appear that way.