72f917a744
This bug was subtle. Basically, on OS X only, we use window.setAspectRatio() to make the player window match the video size. But this is maintained even in fullscreen mode, which makes the window actually not use up the fullscreen, and there are black bars above and below the video player controls, which looks really weird. Unset the aspect ratio in fullscreen mode, then set it again upon leaving fullscreen mode.