UPDATE: Issue fixed. Works great now! Fun, believable VR Vectrex experience. :)
Beware: Weird, translucent, vertical lines in PCVR version (confirmed on Rift CV1 and Quest 2 VD/AirLink); not present in Quest AppLab version.
Sorry you're having this issue. We will investigate. Can you give some more details? Are they always visible or only at specific times?
Hello. I've just uploaded a build which may fix this issue. If you have a chance to give it a try to confirm I would really appreciate it.
Yep, that fixed it. That's a fast turnaround! :)