I assume the "on hit" damage works properly, and I confirmed the 5 damage (not 3) during ticks DOES work. It may seem weak, but it's not supposed to kill, it works well with hitting multiple people after a mole to do damage across the board, or to finish someone you're spraying at.

Total side note, for after everything else is fixed. After respawning with Vengeance, the skill goes on cooldown. You are not able to respawn with it again, so all this does is give the enemies knowledge of where you are after it comes off cooldown. As you didn't program this one, just giving information on an oddity.