Disconnected from Realm While Attempting Xesht

I was attempting Xesht with a friend with a breachstone we grinded for and after the end of the initial breach when the items started to drop, we both got disconnected with a message that said "Game lost connection to the realm server", and we were booted out to character selection screen. Upon logging back in, we were both spawned in our hideouts and the breachstone was gone. This is really frustrating.