[Display Server] Dialogs are placed on the wrong monitor

[nathanfranke]

Godot version:
0b8cb94

OS/device including version:
Linux Mint 19.3 - XFWM, Compiz
Manjaro 20.0.1 - KDE

Issue description:
New dialogs such as Editor settings show up on the wrong monitor in Multi-monitor setups

Demonstration: https://youtu.be/hURCRhbVFg4

Dropdown dialogs (such as the project button) open in the correct location

Steps to reproduce:
Try Project->Quit to Project Manager (Most reproducible I could find)

Minimal reproduction project:
Not applicable

[Anutrix]

This is probably fixed now or is Linux specific. I couldn't reproduce in latest master 4c88327 for any dialog on Windows.

[nathanfranke]

Tested on d4599ff (Same configuration as my original issue)

Now, all windows are opening on the center of the left monitor (Godot is in my middle monitor)

[Anutrix]

@nathanfranke Maybe you should rename the title of this issue to something like "Dialogs are centered showing up on wrong monitor" or close this and make a new issue with that title.

[nathanfranke]

Right, thanks. Not sure if I will be able to reproduce this since I just switched distros, but if I can then I will update the issue with new content.

Edit: (21 hours later) I am able to reproduce this on Manjaro (KDE). Issue updated.

[Anutrix]

Related or same as #37320 so it might be fixed by #37506.
@nathanfranke Please test if #37506 fixes this issue too.

[nathanfranke]

Duplicate of #37320