WINDOW_MODE_WINDOWED acting weird

[KentaPanic]

Tested versions

Reproducible in -4.2.1 stable Windows x64 forward+

System information

Windows 10 x64 - Godot 4.2.1 stable forward+

Issue description

I am using a option button to set my window mode. but I noticed every time I maximised my window using the maximised button on the application then changed the window mode to something else then back to windowed. it wouldn't be in windowed.(I cant really explain it well so just watch the video attached)

https://github.com/godotengine/godot/assets/154477152/bc0b7f5d-a733-4f89-a9e4-e8cea7633a44

Steps to reproduce

In the Minimal reproduction project run the game. then in the top right there will be a Maximise button. click it then change the OptionButton in the center to either fullscreen or exclusive then change it back to windowed.

Minimal reproduction project (MRP)

WINDOWMODE.zip

[Swarkin]

This is similar to my previous issue https://github.com/godotengine/godot/issues/79328 (the title had been changed but the description still shows my original issue which I think is related to this.)

[MikkBenelis]

Yesterday I faced the same issue with 4.2.1, decided to update to the latest 4.2.2 and it is still relevant

[alvinhochun]

I am no longer able to reproduce this on 4.3 beta 2 and beta 3.

[Calinou]

@alvinhochun Isn't this a duplicate of https://github.com/godotengine/godot/issues/93488? The descriptions look very similar.

[alvinhochun]

Curiously no, I think some other change may have fixed the switch out of fullscreen. I don't have time to look at the code now.

Edit: My guess would be #88329