In Fallout 3, it would frequently happen to me that after a battle or talking to someone, my character would still have this angry or mouth-open look on his face. This was easily fixed by swinging your fists or a bat or some other weapon, that would reset it.
I'm having a similair problem in Fallout 4. When in dialogue with companions, he has this sort of drunk look - his eyes are not nearly opened as far as they normally should. What's worse, it seems to affect companions as well. Does anyone know of a fix ala Fallout 3?
I'll try if surgery will reset it, first...
Edit:
Nope... sadly surgery doesn't help. His eyes are normal, but when I pick a dialogue option, he sort of squints his eyes until the dialogue is done... Would be great if there was some way to "reset" this.