In the Options screens, the first three sections allow you to click "Accept" even if you haven't made changes, but the Controls section doesn't. It should be consistent... either all allow you to hit Accept without making any changes, or none of them do.
Also, what is "fake fullscreen" really? I see it doesn't stop my mouse from going off screen, but it doesn't keep the game on top when I click on another program, so it seems useless.
Normally "Fullscreen window" mode is what I use, because it allow me to play fullscreen, but also click on browsers and chat windows on my second monitor without interrupting or hiding the game screen.