* This issue is responsible for causing client crashes when logging out, one of the signs is the sound of your backpack closing multiple times.
* Fix prevents multiple calls to subsystems such as the trade window, which had the potential to dupe items when returning them to the trade partner.
* Credit goes to UO:Revealed (www.uorevealed.com) for reporting the circumstances which lead to the fix, which seems to have been an overlooked issue for a very long time.