Don't need to screen share for this situation. We definitely understand what you're seeing.
The fact that SlickEdit isn't getting the resolutions right, is very suspicious.
Another thing I didn't mention is what Qt has to do with the Y coordinate. In order for the Y coordinate to work the same on all platforms, Qt has to make 0,0 be at the top-left and not bottom-left (which would be what the mac does). If Qt sees the wrong display height, bad things are going to happen. This is why without two monitors where Qt recognizes the screen resolutions, there's no way to perfectly test this.
We will keep doing some testing here. The end goal is for us to be able to reproduce this here. Even if this is a Qt bug, I suspect we can fix this one.