As you can see in the first image, the Inca has 663 influence with Belgrade!. Same happens with other several CS allied with the Inca. Clicking next turn makes the situation worse: now the Inca has 701 influence with Belgrade (second image). The increase per turn is about 38 influence in each CS. I've continued the game and the Inca has about 1000 influence points in each of his allied CS.
I think the bug could be in one of the Patronage policies (The Inca has 2 patronage policies so far). I'm not sure, though.
I've also attached the savegame.
EDIT: removed the savegame because the bug has been fixed!
I think the bug could be in one of the Patronage policies (The Inca has 2 patronage policies so far). I'm not sure, though.
I've also attached the savegame.
EDIT: removed the savegame because the bug has been fixed!