Kid older than parents?

I had a mermaid teen that I merged house holds with 2 cottage living young adults to make a household. Moved them from sulani to cottage living world. Set everything up.

Did the new update

Teen had a birthday now she's older than the parents 😂

I hope the testers at ea tested their update before they released it live

Ps it's still raining and snowing inside the house, I have a roof. Using the house that comes with the lot