Failed to Join Instance on BeachHead

I just had a disconnect while doing the final boss of the BeachHead. No biggy as I had a full set of portals, except that when I click on a remaining portal I get "Failed to join instance because: Disconnected from server"

Pretty uncool as it burns a 20c unique map and I'm still quite poor.

I always get the same bug, i basically need to do whole beachhead on 1 portal, or i get DC and lose the map after i return.

btw, if you get this usually, avoid The council, as the same seems to happen in there, and it hurts a lot more to lose that one.