I am not sure if this is a bug; most games prevent any kind of interaction with the outside world when in fullscreen mode; after all you don’t want to accidentally switch away in the middle of a fight, and Alt-Tab is a likely combination at least in FPS.
Is it sufficient for you that you can enter windowed mode (forgot the key combination) and then switch windows?
I am not sure if this is a bug; most games prevent any kind of interaction with the outside world when in fullscreen mode; after all you don’t want to accidentally switch away in the middle of a fight, and Alt-Tab is a likely combination at least in FPS.
Is it sufficient for you that you can enter windowed mode (forgot the key combination) and then switch windows?