What's happening here? Invisible obstacles?

https://reddit.com/link/1oiesrc/video/b9pp6gr4tvxf1/player

Please ignore the stupid AI planes.

My plane seems to hit invisible obstacles. This happens on taxiways and on the runway, even when landing on short final - it's like the plane hits an invisible wall and it just stops and drops to the ground. Strangely, it doesn't seem to happen while I'm in the drone view. I also haven't been able to reproduce it without VR, but I don't fly without VR often. Sometimes the problem occurs right after starting the flight, when taxiing for takeoff. Sometimes, it happens when landing or during taxi to parking. It also isn't consistent about where it happens.

This recording is from Luton (EGGW), but I have also seen it in Stuttgart (EDDS) and Shannon (EINN). I'm on PC, on the current SU4 beta. I'm not sure if I have seen it on SU3, too, because the first time it happened, I blamed it on an addon and it went away when I uninstalled that, until it recently reappeared.

I have tried deleting the rolling cache, but that didn't help.

My specs: AMD Ryzen 7 5800X, 128GB RAM, RTX 4090. Meta Quest 3 running with Virtual Desktop and VDXR.