December 2015 - last edited December 2015
As I know, a builder can have 3 undeveloped zones, but I only have 2 undeveloped zones. I try to re-install game and play in another device, but it still the same. It this a bug?
December 2016
Which level are you in ? I have also noticed it .The problem occurred in my city also .I would need a expert to tell you the exactly what are the requirements to get 3 undeveloped zones back but the problem disappears in the later levels.For me it dissapeared around level 24.
January 2017