ZBrushCentral

strange deformation when using ZSphere rigging

Like this, when I bend thigh backward, its foot’s deformed strangely. if I bend this thigh to right side, the foot is fine. If bend to left side(toward another thigh) then the foot’s also deformed. What’s wrong with my rig? Or it’s just a known shortage of ZSphere rigging?

Attachments

problem.jpg