Feb 177 everything is fine. But on March Unity goes -9. Because it zeroed all the unity bonuses: food, electricity, goods, water. Even though I have all these resources in excess. No trash issues. If I play little longer, in June the population graph shows the drop to 0. Even though other population gauges still display 700+ pop. I have no idea what it can be. Any help?
I reloaded the save for many times and the behavior was the same. After I restarted the game the behavior changed slightly. Instead of all unity bonuses go down to zero and stay there forever, they reduce(about in half). And month after that they restore back to Feb values.

