Did you try a new save without custom content/mods ?
One the Sims have those, removing the mods/cc will probably not solve the issue. Premades shouldn't change their traits. There has always been a tendency that certain traits are used more often but that's more an issue of bad randomizer or feedback than an actual bug.
So, try a vanilla folder and then try a fresh save if you still get the premades to change traits.
I went ahead and moved my entire Sims 4 folder onto an external HD and completely uninstalled the game to be certain. Then I re-installed via origin and started a new game. Most of the townies still spawned with those three traits and almost all of them had the insane trait even if they didn't have the other two. I checked after a while (played on normal lifespan until my sim aged into elder) and Bella and Mortimer goth both had the insane trait and the kids had all three. Caleb and Lillith Vatore did as well in that save.
I don't know if it's related but also on that clean save every npc was wearing crazy gear during festivals and children kept changing hair colours even after I exited CAS. I'd save them with brown hair and suddenly they'd be blonde in game.
The festival is a known issue.
Did the townies in question attend the festival ?
I'll test this on my game
I've checked my Sims on several saves I have played since PH and none have the issue you describe
Would you be willing to share your save game ?
If so, please zip up this folder: documents\electronicarts\thesims4\saves and drop the file to this Mediafire-Link to upload.
Please make sure to name the zip file with your user name and a tag-word of the issue.
do you still have issues with this ? Would you be willing to share your save ?
Community Manager
