You should change your UI scale though, some of the borders are messed up.
I know... my UI scale is correct but I don't want to use that "micro" windows with 5pt font on my 2560x1440px 27" screen thats why I use nibWindowSize for some of the windows.
Thats why I still request to add an option that brings back the OLD X Button that was made of "font" the new one is messed up clearly with the "wrong" UI scale.
Wouldn't be that hard to do, but it won't change the dimensions if the UI scale is changed afterwards, it'll need a reload (storing every single UI component again would be a waste).
What do you mean by "afterwards"? By the control ingame or if its changed by the addon?
I'll let my UI scale as it is but I'm not shure what nibWindowSize will do...
What If I set all of blizzard windows the same size and only let the UI scale pixel perfect to fit other addons?