I'm really bothered by something that's happening when it's raining : the unplayed sims wandering in the neighborhood wear weird randomly generated outfits, instead of the everyday, cold, or hot outfits (I spend a lot of time giving each of them proper outfits for each situation, so...).
I tried to play without mods, and this issue is still here. To be honnest, I would not be surprised if this is intentional, as it's not the first time something like that happen (we already had these situation outfits with festivals, fake vampires in Forgotten Hollow, tourists in San Myshuno, some people speak about sims in nightclubs too).
But this is so annoying ! When you create a sims, you give her or him a personnality and a style. And these outfits never fit with that (and they often look bad). We are the players, we are supposed to have total control on this kind of stuff, for our sims at last...