https://prnt.sc/imojvihttps://prnt.sc/imol2lI don't know if this is common but first time I have seen it , essentially you can select the territories of another map (MME here last game I had open prior) , they are invisible until you select them. Anyone else encountered this , it isn't really a problem as they aren't selected with priority over a territory for Battle Islands but only when you click on the places where there is an absence of territory on the map FE all the water ect.
