well i switched the game to window mode for some reason.

but now i cant get back to fullscreen anymore.
means i get a fullscreen mode, but not extended, what ever size i choose i endup with black border.

my size is 1920x1080
i can activate this in window mode, but fullscreen 1280x960 is the maxim i'm allowed to choose.
n fullscreen has but only 4 options to me: 800x600 , 1024x768 , 1152x864 , 1280x960