I've seen this a few times, and I think I've only seen it in Beat Saber
so it might be a bug in that game. I get a black rectangle right at the
front of my field of view, about the full height and 2/3 of the width.
It seems to be made of large pixels...
I came to the forum with the same issue. Every time I go into the store,
whether it's on the headset, in the mobile app, or on the website, I
quickly get frustrated that I can't filter what's being displayed. The
keyword search is totally inadequate ...