There is not true north and south in fh2 land. Some devs a firm believers that the poles will soon switch place and everything will be fine.
Geographic north and south are not magnetic north and south, in fact, geographic north corresponds roughly (1000 km away) from the magnetic south pole (generally called the magnetic north pole to avoid confusion).
Still, if the orientation of the minimap is the best thing people can come up with to complain about, you should consider your update pretty successful.
Now, the position of the Sun on the other hand should be in the correct place, as it is the only way you can determine actual north. Whether the north points to the top of your screen is totally irrelevant. It's like holding a map upside down and saying the map is wrong - the map is fine. So, judging from the minimap, the shadows are pointing to the right, which means the Sun is rising on the left side. Since this is early morning and the Sun rises in the east, the sea is in the north, which is correct.