[OPEN] Foods that don't add to Sims weight

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? 1.48.94.1020
What expansions, game packs, and stuff packs do you have installed? Get Famous, Seasons, Cats and Dogs, City Living, Get Together, Get to Work, Jungle Adventures, Parenthood, Vampires, Dine Out, Spa Day, Outdoor Retreat, Vintage Glamour Stuff, Backyard Stuff, Romantic Garden Stuff, Spooky Stuff, Movie Hangout Stuff
Steps: How can we find the bug ourselves? Check my save, or maybe try making a vegetarian sim with low weight to start and see if she gains weight?
What happens when the bug occurs? My sim refuses to gain weight despite feeding her fatty foods.
What do you expect to see? Her gain weight when I feed her constantly and don't exercise.
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? Yes
Please describe the patch or change you made. I wasn't experiencing this issue until after I installed Get Famous.

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I made my sim a vegetarian when I started a new save with GF, and I've been struggling constantly to make her gain weight in two different saves. I've always played this same sim every time a new expansion comes out, and she usually always gets a little chubby when I don't have her exercise.

I've been feeding her tons of fatty foods like grilled cheese, pancakes, desserts. I've had her sit down and eat 5 plates of mac & cheese and then a plate of cheesecake and had her stop exercising for now. I won't even let her walk the dog right now. She absolutely refuses to gain weight, she's at the maximum skinniness and it's awful. I just want her to look healthy. ☹️

UPDATE: I ran a test with my save to make sure she wasn't gaining weight. I played her for 7 days straight, feeding her pancakes, cheesecake, and chocolate cake constantly and not exercising at all. I never let her hunger drop below green and she even ate an entire chocolate cake in one sitting. She didn't gain any noticeable weight.