Server Disconnect during Temporal Sandstorm

Not sure this ones a bug, but I havent seen this message anywhere else except this fight thought Id post it anyway.

During the Boss fight on the Temporal Sandstorm map twice now I've had a server disconnect and dump back to login screen.

As above, I haven't had this happen this in any other part of the game this season, but twice on the same boss in completely different times, first one was about a week ago, haven't fought him in the meantime.

Bit frustrating obviously as the maps are a bit of work to find, then when you reconnect theres no portal back to it, just a failed map.

Maybe my end, I don't know, just seemed odd it was only on this one map.