Unity Presets incorrectly size window mode?

[anon20000101]

I have noticed a bug in the beta of an indie game called war for the overworld.
https://forum.subterraneangames.com/threads/window-not-the-correct-size.4468/

When I reported it they explained that at this point in the development they are just using the unity presets and will look into it at a later point.

This indicates to me that this bug exists in the unity preset itself and their game inherited it, it might be fixable on their end but it shouldn’t be there in the first place

Copy pasta of the bug:

Playing in window mode, the width is the correct number of pixels but the height is not. This is a very common error in DX games (only about 1 in 20 games correctly sizes windows vertically)

This is mainly a problem for when trying to simulate borderless window mode by relocating the window such that the borders are outside the visible area… For example by using the program
http://gwr.orekaria.com/

Note however that this is not an issue caused by GWR or even related to GWR, simple measurements can show that the window is simply incorrectly sized.

PS. by correctly I mean “matches the numbers set in the configuration”.
That is, my monitor is 2560x1440, I set it to create a 2560x1440 window I will get 2560 pixels wide and LESS than 1440 pixels high window. I change it to 1920x1200 I will get 1920 pixels width and less than 1200 pixels height.

The problem as I have observed with most games is that while width measures pixels of actual game (borders not included), the height measures pixels of game + Pixels of border… except that the border height is calculated incorrectly, always, due to a faulty method of measuring the border size. Changing the border’s height by, for example, switching to win2k theme, will change the height of the window, but will not solve the issue and the new calculation will still be wrong by a proportionate amount to the change from going to that theme

Dev response:

Currently we are just using the Unity presets. If these can be changed, it’ll be something we do when we get around to having an actual options screen.

Is this bug actually in unity?
If yes, a fix would be welcome.
If not, what is the developer doing wrong?

PPS. unity preset should add borderless window option

[anon20000101]

so, anyone knows?