Unable to select traits in CAS

I have been experiencing the same issue for a while. (I'm on a laptop and have no mods installed.) Whenever I create a new household the traits don't show up and I can't select them.

I haven't found a solution, but some possible workarounds:

1. Create your sim as usual and click Randomize traits. Once you have them on a lot, type testingcheats on and cas.fulleditmode in cheats, shift+click on your sim and select Edit in CAS. When you load into CAS, the traits should now appear and you can delete them and choose different ones. The problem with this solution is that during gameplay, your sim will still occasionally get moodlets from the deleted traits.
2. Randomize a placeholder sim and proceed the same as in option 1. When you go back into CAS, click on Add sim, make the household you actually wanted and delete the placeholder.

It's a lot of extra work though, so I hope someone can figure out how to fix the bug.

If you don't want to do all of this, you can also add a sim through Story mode. It's not perfect, but it might get you close enough. Alternatively, embrace the chaos and play with randomized traits 😁