Time: Unknown (After Patch 2.55) - Mar. 30, 2015 10:00 p.m. to Mar. 31, 2015 4:00 a.m. (PDT)
Frequency: Unknown
World name: Siren
Character name: Leon Amour
NPC name: N/A
Monster name: N/A
Class/Level: PLD 50
Party or solo: Solo
In-game time: Unknown. Noticed after patch 2.55.
Area and coordinates: Mor Dhona
Steps:
1. Item
2. Sort
3. Sphere Scroll: Stardust Rod wasn't located. (Usually sitting on 4th tab of inventory)

My sphere scroll: stardust rod disappeared after the 2.55 patch. I noticed it today when I was about to infuse by using Alexandrite. Usually I sort my items frequently therefore its regularly located on tab 4 of my inventory space.