There was also another bug where ppl could get instanced into a dungeon with 4 ppl already.
Had this happen in hakkuke hm a while back. A monk said he qued in prog but withdrawn but was too late as he got instanced in.
He didn't show up on the party list so our team comp was smn, whm, bard, tank but tank d/cd after.
It was kinda creepy seeing him there. Like he was somesort of anomaly. Only way to talk to him was to use /say .