I have never seen that happen before... but there have been 3 releases of Max since version 8, so you might want to look into upgrading if you can afford it.
This has been bothering me for quite a while now. Every now and then I get edges that come completely detached from one of their verts and either shoot for another vert or the world origin. This has a habit of corrupting the entire scene. But when I try to remove the edge, Max will probably crash. If I try to delete the…