I meet this criteria at Wake Island, see below, however fuel is in the red. Although both create barges and create minisubs is active and white, I can only create barges, nothing happens when I click on create minisubs (although I do get the tooltip advice to convert supply into minisubs.
Is this a bug? Possible reasons why it isn't a bug is fuel is too low? Enemy forces present at port, although I did create minisubs on day 2 of the invasion with troops present so that one seems unlikely.


