The same butler exists in ALL households

My households used to have a different butler than other households, but something changed, and for some time now, it doesn't matter which household I go to, the same butler guy is there. The npcs that used to be butlers are still around but they're just regular npcs now. It is all I can do not to kill the sim that is playing the current butler because he is a lazy schmoozer. He has the active trait, yet if my sims don't make him get on the treadmill by mentoring him, he will get so fat he probably won't be able to get through doorways if I didn't make them exercise him. If I fire him and then call for butler again it will just be the same guy. WHY can't we have choices. I don't want a lazy, fat butler. Nor do I want to have an elderly broken down and always holding their hip butler either. I used to hate that the butler's changed out every time my sims went somewhere it seemed, but this is much worse always having the same butler across all households. I'm not sure if this was an intended change or something that needs to be fixed. Hopefully the latter.