BUG: Close Button Closes with NO Confirmation on FGU

[RevenantBob]

I maximize FG but the close button is still there and I accidentally clicked it during play (Mouse jerk of the hand). Which closes the game with no "Are you sure you want to close?" Is there a way to add a confirmation? This is a bad experience for a misclick.

[Moon Wizard]

There is no mechanism to add a confirmation dialog on the OS system close button that I'm aware of that is cross-platform or native to the Unity game engine. This is also consistent with other application behaviors on Windows.

Regards,
JPG