After disconnecting from a srever that a friend made, no pvp server and reconnecting later, my map was erased. Forcing me to re-scout everything from the begining.
P.S. I doesn't happen every time, but it does which is really bad cause you play normally for a long time (discover a lot of land) and tha puff, all black.
I saw the same bug report from 2014 but the bug still appears.
1. Join a Server 2. Discover some map more than your screen 3. Disconnect from server normally 4. Reconnect to the same server at a later point in time 5. Open the in-game map that is now black except where you are standing.