I don’t know if it’s a bug or intentional behavior, but since the introduction of NPC hair salons in my playthroughs (both the old one and on a completely new save) my sims are getting completely random hairstyles. I don’t recall such a mess during the previous half year of playing. I have a ton of guys with female ponytails and an increasing number of bald women 
. It’s starting to be quite depressing. Has anyone noticed something like this? In my previous playthrough I ran a hair salon but in this new one I haven’t even taken my Zoi there.
This comes indeed from the barbershop changes.
Restricting certain hairstyles behind in-game play-wall away from CAZ was a bad Idea, I’ll die on that hill.
However, having NPCs going in there messing themselves up is DEFINITELY a bad idea. 100%
Problem is that they pick a random one and hair is non-binary (as it should).
But when you let a code (not even an AI) pick anything at random as said?
Yeah, not a great plan.
They need to keep hair Non-Binary but add a value for M, F, or M/F.
To us the players that value will be invisible. But to the code, this would help them not be weird like that picture.
Thanks for the explanation, I was indeed worried that it was the fault of the hairstyle update.
Hair should be binary. Female baldness is a disease that causes trauma and whose effects are hidden. Even many men are unhappy because of hair loss. And so far, the two-pigtail hairstyle on men hasn’t really caught on in fashion 
. Too infantile?
If I want to create a female character for whom a bald head would fit the storyline, I’ll do it myself, but regularly mixing men’s and girls’ hairstyles on the street is a bit much.
I ended up removing the barber chairs from the salon because I don’t currently have a Zoi I want to work as a barber.
Before that, I tried everything, but there doesn’t seem to be any way to influence the system. There’s no direct way to level the barber skill, and even a five-star barbershop didn’t make any difference. The hairstyles that get assigned seem completely random.
In general, I don’t like the game changing my town this much. At one point, that particular hairstyle had become so common that it was everywhere.
There should be an option to choose which hairstyles NPCs are allowed to assign autonomously.
I agree! I’ve already seen a couple of bald NPCs around.