I got this enchantment on my crossbow via Krong, but the effect is happening when I kill things via melee. Is this intended behavior?
It seems to be a part of how Kronging interacts with weapon types. That is to say, because a Krong special ability can wind up on either type of weapon (crossbow, melee) the XML can't use the specific crossbow trigger, it has to use the more general attack trigger. I think.