Iv'e had both the mouth AND the eyeballs do that, it seems to occur if you morph them.
PS
Hey Geep, how do we "re-parent" the inner mouth? There's lots of stuff in there, lips gums tongue etc.
The eyeball point at doesnt do that unless there are morphs involved, in my experience.
Maybe DAZ should rework V4, I really like this figure, but if you can't morph the face its useless to me.

sometimes I just make those mouth parts invisible, but don't open her mouth  :O

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"Have you ever made a just man?"
"Oh, I have made three," answered God,
"But two of them are dead,
"And the third--
"Listen! Listen!
"And you will hear the thud of his defeat."

-Stephen Crane

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