Moodlets/Quirk Notifications for infants after Infant has aged up

I'm having this same issue but it stems from a deeper problem, as far as I can tell.

If I use testing cheats to clear all the infant quirks before aging up my infants, it solves the hidden quirks issue, but I'll still get the moodlet "tired of milk" a few game days after aging up to a toddler. That moodlet can be removed with cheats but it'll come back a few minutes later. It means that all sims born in-game are almost constantly sad. This has made the game basically unplayable for me. 

Any sim that's been through the infant life phase seems to keep some remnant of that phase as a hidden trait, so they get random infant moodlets for the rest of their lives. I've looked at what traits the sims have and it looks like they're a toddler/child (this never stops happening) not an infant in the traits list. 

I tried deleting Sims 4 from my PC's files but I guess all my game data is in a cloud or something because when I reinstalled the game everything was back exactly like before (glitch included). Same thing when I uninstalled and reinstalled the game through the EA app. 

I tried deleting my saves, repairing the game and then starting a fresh save with all new sims but the glitch is still happening. I can't find a way to clear out whatever cloud is saving my stuff, so even though I've heard rumors that this glitch is fixed for new saves, I can't figure out how to start a purely new save to find out. Help please?