I was using the retopology tools in 3ds max 2012 and one of the vertices ended up having a problem I have never seen before. It wasn't hard to fix, but I am still curious as to what causes this exactly. This issue was causing my projection cage to extend at the wrong angle from this vertex, which was causing some distortions in my rendered maps.
Does anyone know what this is? The move gizmo is normal for all of the vertices except that one.