Issue: Setting the Window Mode to Fulllscreen and Confirm and then Save on the initial Alt+Tab to desktop the game minimises as expected.
However subsequent Alt+Tab results in the game window remaining open and play continuing without pause. Check in Settings, the Window Mode has reverted back to Borderless.
I have tried confirming and saving Fullscreen then quitting the game and Restarting the game but it does the same.
This is in the menu and during cutscenes and gameplay.
Spec:
GPU: Asus GeForce GTX 1080 8GB ROG STRIX GAMING -STRIX
Monitor: Asus ROG-SWIFT-PG279Q Monitor
EDIT:
A workaround for now is to Alt+Enter first then Alt+Tab. Then Alt+Enter again to go back to Fullscreen.
This method retains Fullscreen in settings.
Iis tedious to have to do this each time especially when used to Alt+Tab normally otherwise.