Window resize breaks when going from a lower resolution to full screen resolution

The issue i'm attempting to work around in !263 (merged) , submitted in the wrong order! It seems when i resize the window to the same size as the display, it gets automatically maximized which moves the window if it was not already at (0,0), but something is not receiving the memo causing a strange duplication of the window and a mouse desync.

Windows 10
RTX 2060
Geforce Experience enabled

Video of the issue: https://streamable.com/vjipyx

What happens when i use print screen when at full resolution

A photo of what i really see

I initially blamed SDL but i am not able to recreate the issue with SDL2 alone despite creating a window i believe to be equal to the one openmw creates.