Duty Finder Issue

with the total instances full for duty finder on certain dungeons, there is a major flaw in the system.

Whenever a party member leaves the group, it instantly adds a new member but it throws the entire group into the back of the line of full parties. My random group has had a full party since about 30 minutes of waiting and now we are at the 83 minute mark. Other people in my free company who made a full party are already in the dungeon. and they entered the duty finder after I did.

97 minutes, party member left, back to the end of the line.

This is pretty absurd. Experiencing the same here.

121 minute, other group in my free company had finished dungeon, reentered queue and is in the dungeon, I'm still waiting

123 minutes, got in dungeon, member failed to hit button, lets see if we are at the back of the line again