This question already has an answer here:
- Shadows along edges of mesh in 3D View 3 answers
It seems that when the object is rotated in Edit Mode the "volume" representation will sometimes change, appear and disappear and various angles and distances. I figure there is an option somewhere that I haven't discovered but, in the meantime, does anyone know if it's possible to turn the "volume" display off? It's not bad but it can be distracting.