Here is another save game and video. I still have the problem, three years later. I'm a bit bummed. I want to play off the grid, simple living, rags to riches and I simply cannot. Please fix this.
The bug occurred after the huge update before the Eco Lifestyle pack dropped. June 2020 https://forums.thesims.com/en_US/discussion/976566/june-3rd-2020-patch-notes#latest
Here is my save file: Documents\Electronic Arts\The Sims 4\saves\Slot_00000036.save
I created a brand new save. I have no mods or CC in my mod folder. I used my family that I play rags to riches with that I saved to the gallery and added to a new save. I did change their traits to glutton, which is why the elder has 4 traits.
