Date & Time: 1/16/2019, 7:50PM EST
Frequency: 100%
World name: Excalibur
Character name: Kalila Violette
Retainer name: N/A
NPC name: N/A
Monster name: All
Class/Level: Blue Mage
Party or solo: Both
In-game time: N/A
Area and coordinates: All World
Housing: N/A

Steps:
1. Execute /jobhudmode while on Blue Mage.

Result:
FFXIV crashes due to there not being a Job Gauge for BLU, so no safeguard for a class w/o a gauge was coded in.