WebXR websites on 8KX

If I view a WebXR website such as this demo in Chrome (Parellel Projection on) I get a display “glitch” in the bottom left and top left corner of the left eye. It’s almost like it’s displaying part of the picture above where it should be. Can anyone else try this and see if they have the same issue?

I don’t know if it’s a problem with PiTools, SteamVR, Chromium, or what. Any ideas?