R6. Osnap endpoint doesn’t snap while in X-Ray mode, but it works in Ghosted (which is the screenshot). Some kind of occlusion ? Or only a setting?
Fig 1. Here snapping at endpoint on a surface corner which is inside the orange solid. Ghosted works, but not X-Ray.
Rhino 6 SR17 2019-8-6 (Rhino 6, 6.17.19218.13231)