I was playing Sasaktchewan as the Egyptians and i spawned on one side of a pond (at leas i thought i did). It was acutually a river spliting the map in two sections. It also didnt have any crossings, so I was stuck on one side, so the logical thing would be building ships and getting across. That was the problem, as the Egyptians you need a home town flag on water to build the dock, which i didnt have. So I wasnt able to get to the other side of the water, therefore not being able to help my allies, or do anything at all.
Not sure if this is a map bug specific for the egyptians, or just a one of on this map.
https://imgur.com/oyen02F Picture of the map after resigning (bad quality)