Re: [ARCHIVED] Sims/Pets age up multiple times in a row

I would guess that this is caused by random aging in the game. As in, in an unmodded game, when a sim generates or ages up, they don't (usually) age up to zero days in their new life stage. So a teen might appear with 1 day gone or 13 days gone (and would then age up again soon).

Like the old bug where an elder comes out of CAS and then dies immediately.