There is a bug I have encountered now several times when trying to leave all loot on corpse for a task chest from ADV loot. Normally a wrist piece from ToV or CoV will get stuck in the ADV loot window and can not be left on the corpse. Then you have to wait for the chest to unlock after 15 min to loot. Also lots of tasks and raids been sending to PoK when dropping task or telling task giver in task leave, instead of sending back to original task request zone.
You mean this bug? Confirmed - Unable to leave/assign/loot duplicate item in advanced loot. | EverQuest Forums (daybreakgames.com)
Don't double up bug reports. Also, this is expected behavior. When someone banners, there's no return destination set on the zone data (nor can there be) so the default is to send the person to PoK. There's nothing they can do about this under the current way the data is structured and how the scripts work.