Viking City Size House - Raining Indoors

I have a city sized Viking house placed in a POT. I'm pretty sure the devs know about this, but again:

1. Title: See above.
2. Reproduction Rate: Persistent
3. Blocker: No
4. Details: When it rains, (light, heavy and full-out storm conditions), it rains inside my house on the first floor, but does not rain on the inside of the second and third floor.
5. User Specs: High end system. Running video at max. Patched thru Win.64.480.

 

Thanks for the info, Submitted.

Cheers,
Julyn