I "me too" 'd this: I don't know if it will help, perhaps with a process of elimination from the different packs???
I only have the following packs of Sims 4: EP: Growing Together, Cottage Living, Snowy Escape, Discover University, Island Living, Seasons, Dogs and Cats, City Living, Get Together, Get to Work. GP: My Wedding Stories, Dream Home Decorator, Strangerville, Jungle Adventure, Parenthood, Dine Out, Spa Day, Outdoor Retreat. SP: Home Chef Hustle, Nifty Knitting, Tiny Living, Moschino, Laundry Day, Toddler, Fitness, Bowling Night, Vintage Glamour, Backyard, Kids Room, Romantic Garden, Movie Hangout, Spooky, Cool Kitchen, Perfect Patio, Luxury Party. I didn't put in the kits I have. Unsure if it would help at all.
I only recently, 3 months ago maybe, got the My Wedding Stories after I learned that the "fixes" for it pack indeed did occur, thou there are still a few "menial" bugs.
Before I got My Wedding Stories I was having the same error with the infants, toddlers, and whoever is changing the diaper on the changing table - never actually completes the diaper change, instead both parties reset. More specifically both parties are facing the changing table infants and toddlers too! On that note : my toddlers "stretch" sometimes.
