Guild Wars 2

If a player leaves the instance or is disconnected from the game, there is no way to rejoin them in the Fractal. When you walk into the Lion’s Arch portal, there is no option to join your party like there is in every other dungeon. The only option I have is to start my own instance, so my group is forced to continue with only 4 people.

I can report the same behaviour. One party member got disconnected during one fractal and when he reconnected, he got his own instance of the fractals. We couldn’t meet even in Dessa’s lab.