I'm about midway into the game. My workers should be building railroads and terraforming the land around my new cities. Instead, they are just fortified in my cities. Why is this happening? This happened in another of my games, so I started a new one to see if it would happen again. Both of this games are scenarios that came with the Conquests Expansion and I did not mess with them. I also got the new patch. Does anybody know why this is happenning?