I’ve been seeing this issue with a number of things using Nanite in 5.1. None of the settings on the meshes really do anything that I could see. This is using the “Modular Scifi Season 2 Starter Bundle” off the marketplace but it does apply to a lot of other meshes. It’s a new project just enabling Nanite on the meshes.
I’m using an RX 6800 XT with 22.10.1 drivers on W10. The same thing happens with an RX 480.
r.Nanite.ProgrammableRaster 0 is the only thing that seems to make these issues with missing geometry go away which I guess is closer to 5.0 functionality.