horizontally split c8 screen b2b another sw (w7)

i cannot seem to find out how to dock the C8 window to the left or right (win+left / win+right), while displaying some other application on the other half. as soon as the other program gets focus, cubase’s window hides.

is there no other way?

(slowly going back to C7… i’d actually not really had many windowing issues with cubase… then c8 came.)