That'
s because you have IK on and try to grab their hips. Move their BODY and you won't have any problems. Or turn off IK and you won't have any problems. It's not a glitch, it's how IK works.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.