Every time I Alt-Tab out of Overwatch, whether to desktop, an application on my first monitor, or an application on my second monitor, without fail it resets the game to Windowed mode, from Fullscreen which is what I always have it at. This only started happening yesterday with no major changes to the game or my PC or anything.
Another weird bug that I’m guessing is related and also only started with this one is that I can’t change the resolution in Overwatch on any of the modes, Fullscreen, Windowed, or Borderless; I’ll change resolution and press Apply and there will be no difference, despite it claiming that it has changed.
I’ve also tried deleting the settings file in Documents to no avail.