Time:8.36 ST
Frequency: Happened to me 3 times so far
World name: Odin
Character name: Sensu Shiroiro
NPC name: NA
Monster name: NA
Class/Level: SCH/50
Party or solo: Both.
In-game time: 8.36
Area and coordinates: Anywhere, persists when entering dungeons/raids.

Steps:
1. Change class from anything to SCH
2. Lustrate is on cooldown

or

1. Die anywhere
2. Lustrate is on cooldown

The screenshot I made is from our front garden (Lavender Beds), and it happened after I switched from PLD to SCH as you can see. I switched at 8.34 and the spell was still on CD at 8.36.