Elhoim
Iron Tower Studio Dev
I know this wasn't the point of OP's thread but what is that "+9 production" bit when placing the harbor? Where the hell is that coming from? certainly not from adjacent tiles? I was deeply confused by the difference between the small number showing the increase in X (the thing in the little upside down triangle), and then the giant +X text that takes up the tile (the +9 production from placing the harbor).
That's an interface bug, IIRC.