Visiting Sims very angry - Grr!

[Nindigo]

Hey guys, happy holidays and all that.

I've noticed that non-played Sims who show up at venues and as party guests more often than not show up angry. It's not very fun to throw a party when all the guests stompingly head for the nearest mirror in order to calm down

But it's pretty much the same when my Sims visit a venue.

Have any of you experienced an increase in angry Sims?