curious, I'm having a problem; its kinda the same but a little different.
at times, and not all the time when I change a pose on V4 her eyebrow comes off her head and stays in one place.
happens to the inside mouth parts too. 
so if I bend V4 forward or what have you her eyebrows and mouth stay where my initial pose started.
does anyone know what actually causes this?
and will any of the preceding links in this post help fix this issue as well?
Thanks