Solved
Aspiration trait broken
I finally finished the Creative aspiration today and my game told me to pick a new aspiration for my Sim which I did. But the new aspiration didn't come with the new aspiration trait. I picked Freela...
I'm going to lock this as it's become a bit of a mixture of unrelated things.
If you have the issue posted by the OP, please use this thread instead: http://answers.ea.com/t5/The-Sims-4-Bug-Reports/Aspiration-reward-trait-removed-after-aging-Sim-in-CAS/td-p/5164592
