VNM claiming glitch

Thread Title:
There is a glitch wherein if two players in position of a [Azure/Scarlet/Viridian/Jade/Crimson/Sapphire/Emerald/Vermillion/Indigo] Demilune Abyssite are to /heal simultaneously near a tier 3 VNM both players will receive the message

"A monster materializes out of nowhere!"
"The [Insert Color] Demilune Abyssite shatters into tiny fragments."

Since there's only one mob, the person who rested first lays claim over it while the other player simply loses his or her KI all together.

Case and point: http://img641.imageshack.us/img641/3...0309120757.png

Platform:
Windows

ISP:
Road Runner

Type of Internet Connection:
Cable

Internet Connection Speed:
5Mbit/s

Date & Time:
03-09-2011 12:03 PM EST

Frequency:
State how frequently the issue occurs. Please select from the following.
1. Always

Character Name:
Ophannus
Race:

Race of your character when the issue occurred.
Hume M

World:
Diabolos

Main Job:
RDM

Support Job:
SCH

Area and Coordinates:
Abyssea - Attohwa

Party or Solo:
Party

Monster Name:
Lusca

Steps:
I was /resting looking for Lusca with one other party member. Only I had a Jade Demilune Abyssite in possession, the other party member did not. When it was 15 yalms away I went to the area and /rested near where other players whom were not in my party or alliance were also /resting to pop the same mob. A member from a different party and myself both /rested within 5 yalms of each other and Lusca popped. Since I received the message that I lost the key item I assumed I spawned the mob but had it stolen from me. Upon calling a GM he confirmed that both myself and the other player lost the KI but only one Lusca exists in the zone at a time. The player that /rested first claims the mob but if a player does a /rest action simultaneously or within an extremely small window after the other player they will also lose their key item and receive the message that a monster materializes.