Time: Always
Frequency: Whenever casting any spell
World name: Ultros
Character name: Rado Banado
Retainer name: n/a
NPC name: n/a
Monster name: n/a
Class/Level: Black Mage, Level 50+
Party or solo: Always
In-game time: Always
Area and coordinates: Everywhere
Housing: n/a
Steps:
1. Equip Stardust Rod or any of its upgraded variants
2. Cast a Black Mage spell. Any spell
3. Observe that particle effects appear BEYOND the end of the staff, instead of at its orb

Screenshot evidence: http://i.imgur.com/xIa8u0T.jpg

It feels incredibly dissatisfying to use the Stardust Rod as its particle effect has been bugged for a long time now. The screenshot shows the bug when casting Fire IV, Blizzard IV, Freeze or Flare, but it persists across each and every spell you cast as a Black Mage, up to and including cross-classed spells.

I'm pleased to let you know that the starting position of the Stardust Rod's glow effect will be corrected in Patch 3.15! Thanks for your patience!