ACN not gaining XP in Halatali

Time: All day 12/16/2014
Frequency: Every instance
World name: Hyperion
Character name: Neon Zero
NPC name: n/a
Monster name: The bombs that spawn from Chain Winches
Class/Level: ACN/20+
Party or solo: party
In-game time: Happened every run so...a lot.
Area and coordinates: Halatali normal dungeon
Steps:
1. Party activated Chain Winch on the way to 2nd boss.
2. If the bomb mob spawns, it is killed via party or self-explosion.
3. ACN gains zero XP compared to other classes in party reporting they are gaining some.
<*Add more steps if necessary>

I might be wrong about that, but quite sure that you do not get EXP for selfdestruct.