@107531kop Do you have Neighborhood Stories enabled, and if so, does it help to disable progression for everyone, both played and unplayed? Additionally, as an experiment, try moving your sim to a lot in one of the base game worlds, and don't give the lot any lot traits.
If that doesn't help either, try selling any bonus items your sim has, as well as any large collections of items, both placed in the house and within inventory. (You could just move and choose "sell furniture" so you don't need to deal with the extra items already placed.) You can use "save as" to rename the save, so the original remains intact; please do quit and reload to see whether anything has changed.
@107531kop As a test, please save your sim to your in-game library and place them in a new save. If you see the same issue, try playing a new save in a clean user folder. Move the entire Sims 4 folder out of Documents\Electronic Arts and onto your desktop, launch the game to create a new folder, and just run a new save for a few minutes to make sure the game is working properly. Then you can transfer the Tray files from your saved sim—they'll all have the same timestamp, matching when you saved the sim to the library—to the new Sims 4 folder, and you'll be able to place your sim in a new save in that folder as well.
I'm not suggesting you necessarily need to abandon this save, just that this can help narrow things down. And I understand that this happened after an update, but it can't be only about the update itself or we'd be seeing a lot more posts describing the same issue.
