New answers tagged fullscreen
I am using Keynote 6.5.3 and Cmd-Tab works fine to switch between applications.
In System Preferences --> Dock: uncheck the option "Double-click a window's title bar to minimize". When you double-click the title bar, it maximizes the window without entering full screen mode.
Just to confirm your observation on current version 38.01 of Firefox. There are 2 types of full screen mode. One is the Firefox it self in full screen mode. It will stay like that till you turn it off. It does not look the same as the Video full screen. You can still see the Tabs. It is not correct that it will open the videos in full screen ...
VNC viewer has it's own 'full screen' mode. To access it, move your mouse to the top of the window (where the arrow is pointing) and click the full screen icon. The only issue with this is you cannot view multiple desktops (using the trackpad gestures) without closing full screen mode. To toggle full screen mode quickly you can press F8 (fn+play/pause) ...
Fullscreen only works on the desktop (space) the application is inside of at the moment. Since each display has their own spaces, the app will not cross over into the others unless you manually resize it to fit.
System Preferences > General > Uncheck "Close windows when quitting an application".
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