I'm having a bit of a problem, every once in a while something weird comes up in poser and i have no idea what's the cause.

I'm working on fixing the gloves for my Elven princess outfit and when ever i bend the hand, some of the mesh stays and drags, usually i can fix it using the joint editor, but it doesn't seem to be working, any ideas what the problem might be? i have the same issues with pants in the groin section too.