Emulator

Game Name?
Any

Game ID? (right click the game in the game list, properties, info tab)

Any

MD5 Hash? (right click the game in the game list, properties, info tab, MD5 Hash: Compute)

Any

What's the problem? Describe what went wrong.
No matter what option is set at "Fullscreen resolution" in the "Display" section, Dolphin always launches the games on the same monitor (out of 3, the most left one in my case), even if I specifically set it to a different one.
The resolution itself seems to get applied, as the monitor it's supposed to launch on does lower it's resolution to what I specified, but the game is still launched on the most left screen.
This happens on both OpenGL and Vulkan renderers.

What steps will reproduce the problem?

Launch any game on Linux. an AMDGPU is possibly needed.

Which versions of Dolphin did you test on? Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

5.0 and latest git. Using a different version doesn't help.

What are your PC specifications? (CPU, GPU, Operating System, more)

CPU 97 4790k
GPU AMD RX480
OS Gentoo Linux, however happens on Arch Linux as well

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

Not that I know off