Heads shake when they pop off

Whenever killing a zombie that's not gargantuar the head will come off. One of the new additions in replanted is that the heads have new physics/animations. Though for some reason if you look closely, once a head comes of it shakes. It isn't too noticeable but if you look closely you could spot the quaking heads. This has been bothering me for a while so I really hope it gets fixed in a future patch, thanks for reading!