Today it has happened to me twice that the group wasn't able to complete the dungeon, two left, one DCed and didn't come back and I could neither queue for more or invite somebody into the group to vote kick the DCed player. I had to abandon the dungeon at last boss (two different dungeons, two different groups). Please fix this.

EDIT: One of DCed guys reconnected later, left the group but I couldn't queu again to fill in missing members. Result is the same. Wasted time in dugneon.