Metahuman face animation and floating head

Hello,
I’m trying to do head syncing combined with a UE4 skeleton animation I got on the asset store. I used no blueprint for now, just asset animation for the body and the face.
I put the animation to the body, and to the face skeletons in the editor.
It works perfectly separately (2 first pictures), but not at all when I combine them. The head is floating (third picture). How can I fix this issue?
Thanks.


image