[Oudated] Fullscreen toggle opposite of what it should be

####What happened?

####What was SUPPOSED to happen?
The fullscreen option should make the game fullscreen when checked and windowed when unchecked.

####Steps to reproduce:
Run game in DX12, starting it non-windowed.

####Comments:
Not sure if it works correctly starting in windowed mode.

Try unchecking it then press apply. When it shows the pop-up “Keep settings” you will get your windowed game. However, it looks like you can’t go back to fullscreen. Also, this happens in every version.

I could go back and forth between the two, but it simply did the opposite of what I had it set to