Regression: Mouse input does not work anymore in the menu / pause menu with alwaysgrabmouse

The commit 9f116c7c introduced a new bug with alwaysgrabmouse on where clicking in the menu / pause menu does not do anything anymore, you can still navigate up, down, left and right through the menus but the clicks just aren't registered. The expected behavior is that the clicks should be registered in the menu / pause menu when you have alwaysgrabmouse on as it used to be.