Entire party disconnected

Was doing a Gambit run, and we were clearing the trash just before the second boss (the dragon) and as soon as the last add died, everyone got disconnected, instantly ending the key.

Like… tf? never seen this happen before, we were also stuck at the start of the key inside the light dome, so we had to heart out, not even abandoning fixed that.

There are a number of threads about this bug, with comments by other players this happened to.

just happend to me and my group on first pull, did you get the dungeon deserter? its telling me im going to get it

Dont think i did no, i guess cause we all logged back in and later abandoned properly.