Date & Time: Since the 12th of October
Frequency: Unlimited as it happens whenever you press the engage button
World name: Balmung
Character name: Testarossa Fate
Retainer name: /
NPC name: All Squadrons
Monster name: /
Class/Level: /
Party or solo: Solo
In-game time: /
Area and coordinates: /
Housing: /
Steps:
1. Go into a dungeon with your squadron
2. Pull some monsters
3. Spam the engage button

I didn't add anything else from the template because this is not a bug that will crash the game, rather it is a bug where something doesn't work as intended I think.