[Bug] B.net forgets Map Fog when Disconnected

I was playing a private game inside the Defiled Crypt in the Cemetery of the Forsaken. My internet connection dropped randomly (as usual -- Clear 4G Spot).

When I logged back into Battle.net, my character and templar were back at New Tristram. I went to the waypoint and saw the Cemetery of the Forsaken was still accessible. When I teleported there, I pressed "M" to open the map.

All the progress done is gone in the map. I can't see anything but the immediate area of the Cemetery of the Forsaken. I will have to explore the entire area back to New Tristram to have view of the map.

Not sure if this is a bug, or known bug. Or if it should be a feedback -- Battle.net should somehow remember where I have been if a player gets disconnected -- which is the ISP's fault.

Image link:

http://www.blizzplanet.com/wp-content/uploads/d3-beta-battlenet-forgets-fog-of-war1.jpg

Not a bug. When you leave the game and rejoin it, you get a new map. Even if you left via disconnect. It was the same in D2.

Edit: Damn you Sixen. Always seconds ahead.