It’s been happening to me since … two patches ago? Didn’t even bother me that much since I could just log back in and resume where I left off. Even if it was a dungeon. But I just got punted from the FotM dungeon and I can’t rejoin my party because the way the dungeon is designed.
So here I am to chime in to say … fix this issue. Especially if you’re going to design dungeons where you can’t rejoin if there is a connection failure.