Booted From Dungeons
IF u kick opener or he leave its close dungeon and kick all group out with reset. I play gw2 for 6 mounth and it always work like this. Even if opener go offline, dung will not work(new cutscenes not start without him).So, its not issue or bug.
Solution:
1. Open dungeons yourself
2. Do dungeons with friends
This definitely isn’t new. If the owner of an instance (i.e., the person that opens the dungeon) leaves the party or changes characters, it kicks the rest of the party from the dungeon. Going offline hasn’t typically been an issue for me.
I recommend doing what Anapxist suggested and only do dungeons with people you know and trust or open them yourself. That way you can reform your party if necessary and you aren’t kicked if someone has connection issues.
However, there is definitely an issue involving being kicked from your own instance that I’ve experienced.
https://forum-en.gw2archive.eu/forum/support/bugs/Being-Kicked-From-My-Own-Instance/
Yeah this happens often and it kitten es me off as well. It’s partially why I try to avoid doing dungeons with randoms but mostly because I just can’t stand the ineptitude of people when it’s directly ruining everything for me.
And of course when people leave (either intentionally or unintentionally) it always has to be at the worst possible moment. It always seemed to happen to me whenever I was almost done a run. Or in the case of Fractals of the Mists, on the last fractal right before the boss. Now I just create my own groups most of the time or only play with people I trust not to do that kind of thing.