I noticed that some areas are still show "fog of war" on minimap (colored in "undescovered" grey) even if you moved ship (in my case ColonyShip) there by default .
But if I enable ship view (ship button above minimap) on Minimap it start show not only ships but "missing" areas too.
And another thing , I am not 100% sure so I am not making separate thread but it seems like minimap positions are off from real positions near the border.
Example: there is a star on left side near the border , I have a ship left and on top of it (even closer to border) but on minimap it shows right and on top of the star .