Characters moving inside their character portraits

This is a dumb question and honestly doesn’t affect me at all, but i’ll ask it anyway. In every GD video i watched, everytime the player was talking to a npc, the npc portrait would move. As in, it would move his/her head. In my game, they never move, the npc portrait never moves.

Like i said, this doesn’t bug me at all, but i’m just really curious because maybe there’s something in the options menu im missing or something in my game files that is busted. So the question is, how do you make the npc portraits move?