OpenXR + WMR = Black corner artifact.

So the problem is very simple, but I can’t find any answers or clues about how to fix this. As you can see from title, I’m getting strange, curved (slightly moving) black thing in top right corner of the screen, when using OpenXR plugin. It started to appear only in UE 4.23 and transferred onto fresh 4.24 from the Epic’s Luncher.

I tried to create fresh empty project (no 3rd-party plugins), and it’s there.
I tried to run empty and working projects on several different pc’s, and it’s still there.
So I suspect either problems in plugin’s code, either or some non contextual option inside editor.

I really in need of OpenXR plugin, because of WMR plugin fully abandoned, and not working properly from UE 4.22.1