Loan interest error (Kebir Blue)

I just realized that there seems to be an error with the paied interest for given loans. I gave 8B loans to others, which should give at a real-year 12% interest about 657m interest per game month, at 4 months per day on KB and 365 days. I only receive about 444m per game month which is about 8% interest rate

444m per month is accurate for a world with 6 game months per RL day.

Isn't KB 6 months per day now? I seem to remember KB and FB increasing to 6. Haven't actually kept track though :d

it still says 4 months on the world description, then there's the error ;)