Nvidia-xrun prevents input via emulated controler (mouse clicking)

[MrSoup678]

I encountered a strange bug when using nvidia-xrun on dolphin.( basically it's separate X server using nvidia dedicated card).
Upon lanuching any game (even Wii menu) pressing A on emulator screen (left click on mouse), will do nothing.
It will work on on window's border though, or clicking outside it.
Happens regardless of backend.

[MrSoup678]

Here are the log files. I doubt they wiill be of any use.

[MrSoup678]

Here's the video demonstrating the problem and Portal 2 to confirm it's working for other games.
https://streamable.com/n6jht

[JMC47]

I posted this around to get opinions but, it seems like Dolphin doesn't support running in a different xserver - it can't tell it's in focus.