Save: https://drive.google.com/file/d/13KXqw2wQDsSW8HztrLnuAytDCBev-MCF/view?usp=sharing
Go to the Trade screen with Lord Kona.
Put "Colonial Administration" and "Propagation" in the "You Get" column.
Click on "Offers Credits", then bug, the value is not adjusted correctly.
This bug plagues the game from years, please, make it works correctly.
