Joining FINISHED dungeons

What is worse than AK dungeon que? Answer: waiting throu said que only to join a dungeon that is already finished, and then wait in said que again.
Why are people able to que up for replacement players after they finish a dungeon? My last two dungeons have been exactly this. sitting at 0 tomes for the week thx to this crap.

BTW I tried not enabling joining party in progress. Gave up on it after being in que for 125min.

It only affects Amdapor because that dungeon is broken. Notice how whenever this happens it says "In Progress: 3/4" even though there are only three bosses in AK. So the group downs the third (last) boss, but for whatever reason the Duty Finder thinks there are four bosses in there and so it treats the dungeon as unfinished.

Yea this just happened to me. Extremely frustrating waste of time