This is not normally a problem as I usually finish a turn, save and log out before hitting end turn. When I start again at a later date I pull up the the save file and hit end turn before starting to play. I do this so I can see the friendly shipping PPs in the shipping lanes (they do not show until you hit the end turn button) and to keep from losing track of where I leave off. The port does not advance in size, twice a turn, using this approach.

