This bug is already known to us, and we will fix it by the next micro-update. Now, if you're playing on a PC, you can open the console on Shift+Alt+O and type this:
eval(npc_id)['appearance']['pubic_hair'] = 0
In this case, everything will work. In addition, if you are playing on android and your goal is to get a sex scene, you can check for pubic hair in NPCs. They cause exceptions.