The Wanderer's Palace Final Boss bug

[Dathus]

Time: 12:59AM EST 19/12/2013
Frequency: Always
World name: Diabolos
Character name: Dathus Tomar
NPC name: None
Monster name: Tonberry, Tonberry King
Class/Level: White Mage/50
Party or solo: Party, 4 members
In-game time: Unknown
Area and coordinates: The Wanderer's Palace (X:12, Y:2)
Steps:
1. Casting Holy on the group of Tonberry adds that spawn second(and all following sets)
2. Killing with Holy did not let the mobs die, nor contribute stacks of Rancor to Tonberry King
3. Tonberry's remained on the screen, following around the person with the most aggro

Connection Specs
- Type of internet connection/provider: CATV/Rogers
- Modem maker/model number: Cisco/DCP3825

PC Specs
-=-=-=-=- System Information -=-=-=-=-
OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601
OS Manufacturer Microsoft Corporation
System Type x64-based PC
Processor AMD FX(tm)-6300 Six-Core Processor, 3500 Mhz, 3 Core(s), 6 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 1302, 14/11/2012
SMBIOS Version 2.7
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale Canada
Hardware Abstraction Layer Version = "6.1.7601.17514"
Time Zone Eastern Standard Time
Installed Physical Memory (RAM) 8.00 GB
Total Physical Memory 7.92 GB
Available Physical Memory 4.83 GB
Total Virtual Memory 15.8 GB
Available Virtual Memory 11.9 GB