Yes, no, It seems to do it whenever it feels like it. Some combinations of settings will cause some facets to drop off. Shadows and Shading Rate seem to effect it. Production or Draft. If you change a setting the lost facets will either move or go away. If the renderer wasn't so f'n slow it wouldn't be a big deal. But when you have to wait 15 minutes to see the results it's a bit annoying when you figures nose turns up missing.