Sim getting moodlets from a trait they don't have.

For the longest time, a lot of my sims in multiple different saves that are in a relationship with each other will get moodlets from a trait they don't have and never had. Specifically the "Smothered" moodlet from the Noncommittal trait. Most of the time I'll use the UI Cheats mod to get rid of the moodlet, but it always ends up coming back. It gets to a point and whatever is causing it should be fixed eventually. I don't believe it could be one of my mods, especially considering I keep them up to date and I've been having this issue for months. I'm not sure if it's just me, but it's likely other people have had this issue too.