I feel pretty sure I've had cities rebel after I've 'scorched' them and destroyed all buildings, but I'm not certain. This could be something that's automatically resolved when we get 1.5 finished. If it's not resolved with the port, I'm not sure what we can do about it except to alert people to this problem. But it would be great if we could all keep this issue in mind when the port gets here and let's see if it's still doing it - and if it is and we are pretty certain about it, then we can make a big note for everyone else to see and remember.