I have a laptop on which a second monitor via HDMI cable is shot. The second monitor is set as the main monitor. I did not have the problem before: If I play a full-screen game on the second monitor (projecting only on the second monitor) and then press the Windows key, the game just minimizes, why?
Did not have the problem yesterday.
Is the game running in the borderless window or is it really full screen? Not every game remains as an active window in the background when full screen is set.
Complete in full screen mode
When the game is really full-screen, it minimizes when you press the Windows key. But in many games there's a kind of "frameless" windowed mode, if you set it, the game will not be minimized.