Quote Originally Posted by OPneedNerfs View Post
New player is left waiting for said role to be filled again.
It could also be that another player met the requirement better than you did, so you were the one dumped. For example, if a dps is trying to get into tam-tara because they are only level 17, it will initially chose YOU to wait in that queue with them as dps. But then a second dps appears who is closer to the target level for tam-tara. The duty finder puts the two low level dps together, and bumps you to a higher level dungeon.

Back during 2.0-2.2, players level 30-50 were constantly getting stuck in the earliest dungeons, until duty finder was reprogrammed to automatically try to put you in highest level duty possible.

Another situation... maybe you que in random high level as a healer, and the game was going to stick you into brayflox hard due to a dps waiting in queue. But then another healer specifically queues for brayflox, so you get replaced by the guy who manually selected it.