During my current game at king level, I just got ally status with Cultural CS and the decay rate is -1.5 per turn . Current turn is 146 in game. Nobody has even started pat tree yet. This occurs a lot in my games. My understanding is the decay rate should be -1 per turn.

Last game I had, I started pat tree and everything was fine except for -1.5 with one CS. Then Mongolia completed pat tree. My decay rate went from less than one per turn to just over one per turn. I expected this, no confusion here. Then Spain completed pat tree. Decay rate became almost -1.51 per turn. I expected this also. Than Mongolia eliminated Spain. I expected the decay rate to back to just over -1.15 per turn since Spain was gone. No such luck, it stayed at over -1.51 per turn.
I see this "feature" with at least one CS per game. Anybody know why.


Last game I had, I started pat tree and everything was fine except for -1.5 with one CS. Then Mongolia completed pat tree. My decay rate went from less than one per turn to just over one per turn. I expected this, no confusion here. Then Spain completed pat tree. Decay rate became almost -1.51 per turn. I expected this also. Than Mongolia eliminated Spain. I expected the decay rate to back to just over -1.15 per turn since Spain was gone. No such luck, it stayed at over -1.51 per turn.
I see this "feature" with at least one CS per game. Anybody know why.