Clicked Pass on loot but it rolled Greed instead

Time: July 15th, Tuesday, Around 8:00 a.m. CST
Frequency: Once (did not reproduce)
World name: Excalibur
Character name: Mikio Azuloq
NPC name: n/a
Monster name: Scylla (Edit: Glasya Labolas was the boss that was defeated when the error occured)
Class/Level: Scholar/Level 50
Party or solo: Full Alliance of 24
In-game time: no idea
Area and coordinates: Syrcus Tower

Steps:
1. Party defeated Glasya Labolas and continued to proceed on with the raid normally.
2. "Amon's Sleeves" item offered for Alliance B (the group I was in) and I hit Pass on the item.
3. I look to the chat and see that it says I rolled Greed on the item when I hit Pass.
4. I warn my party members not to pass the item yet so I can log out so I don't receive the item.
5. The combination of the logout being too slow and not all of my party members seeing my warning led me to receiving the item that I hit Pass for and causing me to wait 7 more days before attempting to receive the item I was doing Sycrus Tower for.

Connection Specs
- Type of internet connection/provider: Cable / Time Warner Cable
- Modem maker/model number: ARRIS / "TM602G/115"


PC Specs
-=-=-=-=- System Information -=-=-=-=-

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
OS Name Microsoft Windows 8
Version 6.2.9200 Build 9200
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name LAWLLEET-PC
System Manufacturer ASUSTeK COMPUTER INC.
System Model M11BB
System Type x64-based PC
System SKU SKU
Processor AMD A10-6700 APU with Radeon(tm) HD Graphics, 3700 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date ASUSTeK COMPUTER INC. (Licensed from AMI) 0307, 8/7/2013
SMBIOS Version 2.7
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer ASUSTeK COMPUTER INC.
BaseBoard Model Not Available
BaseBoard Name Base Board
Platform Role Desktop
Secure Boot State On
PCR7 Configuration Binding Not Possible
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Locale United States
Hardware Abstraction Layer Version = "6.2.9200.16442"
User Name Lawlleet-PC\LAWLLEET-PC\Tyler
Time Zone Central Daylight Time
Installed Physical Memory (RAM) 8.00 GB
Total Physical Memory 7.20 GB
Available Physical Memory 4.28 GB
Total Virtual Memory 8.99 GB
Available Virtual Memory 3.90 GB
Page File Space 1.80 GB
Page File C:\pagefile.sys
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes