Heh I've always seen the twitch as a visible result that I'd actually ADDED the mat pose. A sort of "OK I get it" from the character L

I get it 8 out of 10 times. It's that common IMO :)

Some MAT poses are more prone to it that others though. But I've never investigated it enough to find the actual reason. As long as the leg moves back in place (which it always does) then I don't care :)
 

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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.