Invisible Garuda (Hard Primal Fight)

On occasion, Garuda will not reappear after disappearing, I was Main Tanking her as a Paladin. There is chance that she will not reappear every time on my screen, while she is there on others. Cannot target her, nor will the "Target the Target of your current Target" key bind work. :mad:

ISP:
Shaw

Type of Internet Connection:
Cable

Internet Connection Speed:
2.5MB/s

Date & Time:
10/03/2013 Usually any time, this time today was 543 PDT

Frequency:
Sometimes

Character Name:
Jareth Malegant

Race:
Elezen M

World:
Balmung

Class/Level:
Paladin LV50

Area and Coordinates:
The Howling Eye (Hard)

Party or Solo:
Party - 8

NPC Name:
Garuda

Monster Name:
Garuda

In-Game Time:
not sure.

Steps:
Fighting
Battle
Garuda vanished and never reappeared, although all other party members could still target here and see her on screen.
No Macros were being used.
No error messages