Spell Casting Bug: Offensive Spell NOT Fired When Rotating Character

[ElenaKirei]

ISP:
FastNet

Type of Internet Connection:
Cable

Internet Connection Speed:
1MBps

Date & Time:
Friday, February 7th, 1 PM PST

Frequency:
Always

Character Name:
Elen Kire

Race:
Miqo'te F

World:
Brynhildr

Class/Level:
White Mage / 43
Thaumaturge / 15

Area:
Eastern Thalanan / Solo
Lower Las Noscea / Solo
The TamTara Deepcroft / Party of 4

NPC Name:
None

Monster Name:
Little Ladybug
Myotragus Nanny
Tuco-Tuco
etc.

Steps:
1. Cast an offensive spell with casting time (Fire, Thunder, Blizzard, Stone, etc.)
2. Hold down the right mouse button and move mouse, so that the character will rotate.
3. Spell fired but enemy is not damaged. (Spell animated but is not working)

If using healing spell / defensive buff (Cure, Stoneskin), the spell will fire and heals / gives buff to the character targeted. (Spell works)

Bug does not appear to affect instant-cast skills and spells. (I often spin around cameras like mad when tanking and causes me hitting weaponskill when not facing the enemy, works fine.)

What you were doing when the issue occurred:
Battle (FATE, dungeons, hunting logs)

Screenshots:

Begin casting Stone II on enemy


Stone II casted, character rotated abit to the left, Stone II does not kill enemy?!


Begin casting Blizzard on enemy


Rotate character to the right, Blizzard doesn't kill enemy!


Begin casting Cure on self


Rotate character 180 degrees, cure casted and heals me!


Begin casting Stoneskin on a random dude


Rotate character to the right, Stoneskin fired and applied to that dude


EDIT: Formatting.
EDIT 2: More screenshot.
EDIT 3: Moar details.