Sim gets a materialistic moodlet without having the trait

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.79.93.1030
What expansions, game packs, and stuff packs do you have installed? Island Living, Get Famous, Seasons, Cats and Dogs, City Living, Get Together, Get to Work. Realm of Magic, Strangerville, Jungle Adventure, Vampires, Dine Out, Spa Day, Outdoor Retreat. Moschino, Laundry Day, Fitness, Bowling Night, Vintage Glamour, Backyard, Romantic Garden. Movie Hangout, Cool Kitchen, Perfect Patio, Luxury Party.
Steps: How can we find the bug ourselves? 1. Download the sim from my gallery (ID: ruezu). 2. Test the sim in the game.
What happens when the bug occurs? The sim gets a tense materialistic moodlet without having the trait.
What do you expect to see? No materialistic moodlet when you don't even have the trait.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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This particular sim, that I recently made, only gets this tense materialistic moodlet. I tested, and she doesn't get any happy moodlets when I bought something new and she can't do any materialistic actions. First time something like this happened, and I'm not so sure it's related to any update because I couldn't replicate the bug with other sims.

I've tried removing this nonexistent trait with the traits.remove_trait as well as cas.fulleditmode. It didn't show up in the trait list with MCCC either.