Couldn't develop a city while in the lead even though I had the commodities.
Could not develop my city even though I had the commodities to do so. Ended up having to trade them away. New bug for recent update. I was in the lead at the time. Is this a new equalizing factor?
I have been having the same issue. It seems like it might be triggered by bank trades late game. I'm not sure though. I've experienced it multiple times. Tried restarting the app. Nothing works. Anyone have a fix?
So I used to get frustrated by this, but I realized if you don't have any cities at all, you cannot upgrade the commodities. You must have at least one standing city.
Hope that helps.
I’m having the same issue. It grays it out almost as though it thinks I don’t have the commodities to purchase it even though I have more than 1 city & plenty of the correct commodity. I was in the lead at the time as well. Super frustrating! hope they fix it soon!