It just dawned on me that there is small chance this could be helpful. I played almost all day yesterday (and started to feel things were cursed NGL).
I am for investigation sake going to lay out everything (even though something’s are not related to the bug I want to paint the full picture);
Incident 1: I went to open my game, but my PC dumped the internet so I launched offline. However my cheat menu was bugged so I couldn’t type in MOO (I would type but nothing would show but all my hot keys worked fine) I’ve had this happen before and the only solution is to reload the game, but I didn’t do anything yet so I didn’t save.
Incident 2: I went online cause my PC and the internet made up apparently and opened my save back up and was placing things from my HH inventory normally I have methods of avoiding the lag that creates but I was just getting a couple of things out real quick so I thought it would be fine (spoiler it wasn’t), as soon as I clicked out of the HH inventory I got a “The Sims 4 Is Not Responding” message and the only option I was given was to close the program (obviously that progress was not saved)
Incident 3: I then opened my game again and finished my build and saved before going out of manage worlds Build Mode and into Live Mode. And all was fine for a while… key word a while.
Now for context: I usually leave my game open and play in my pockets of time. But it wasn’t until around midnight my time my game completely froze though and the bug occurred. But it was late so I went to bed and said screw I have back ups if something is wrong and I’ll deal in the morning, (this was a mistake my anxiety was high last night :| so many save corruption nightmares)
But It was only in hour in today that it happened It also be worth mentioning my sim is pregnant and I have a very big sims family (This baby and it’s twin cousins are gen 40) . And I should probably note that I wasn’t doing anything nuts like overhauling the world, getting a bunch of sims married, traveling, ect. Just having my sims go to work, skill build, and upgrade appliances while I waited on the baby to be born.
this is just me documenting stuff incase any of it becomes important later.
edit to add: I just remembered that I’m pretty sure one of my sims was feeding my ghost cow plants when the freezing happened (they were at least hungry both times) but I can’t remember if my sims was feeding the first time or not.