Mistakes I made: I forgot setup in SB menu from full screen to window full screen!+++
Your setting works now, the Win11 frame has disappeared! Now I can jump from one monitor to another with the mouse! I have to test this in multiplay now!+++
Before SB is frozen in multiplay! When I jumped back to the game from Teamspeek! (I was there in full screen, not in Win11 mode)!+++
Thanks