Time: Since ?

Context: Stun grenade ignores their immunity and stuns dungeon bosses.

Expected: Stun grenade shouldn't ignores their immunity and stuns dungeon bosses.

Observed: I was in dungeon group for iron tomb and unlocked stun grenade after spending 30 points into saboteur, tested it on three kings and noticed its stunning them possibly ignores other dungeon bosses immunities as well.

Repro steps:
  1. At least spend 30 points into saboteur and unlock stun grenade.
  2. Use the ability on dungeon boss and notice its stunning them.