Party in progress issue

When selecting "Party in progress", you can be queued into finished dungeon - no goals, final boss is defeated, time is still ticking. It's caused by pop up to recruit new members after you defeat final boss and someone leaves. So if someone actually confirms that pop up, df will search for people for a finished instance -> leaving finished dungeon instance running till time ticks away -> wasting resources of df servers since it's running useless instance. Spotted to happen with AK.
Solution is to prevent pop up from appearing after defeating last boss.
http://i43.tinypic.com/mh59pj.png

Actually the way it works (from what I've heard) is that the Duty Finder keeps the instance open even after all party members have left, and only closes the instance after the timer is up. Which is infact stupid and part of the reason you get 30min queue times in AK with a full group. As such I can see how this would be possible. But it is stupid and does need to be changed. I highly suggest you edit your post to the format requested (found > http://forum.square-enix.com/ffxiv/t...EAD-THIS-FIRST)) to get them to do actually look into this instead of discarding it for lack of information.

It's understandable if it keeps unfinished instances, since people can join those and finish them but what wrong is that it also keeps finished instances until timer ticks out.