Issue: [BossDamageContribution] Damage numbers after killing an empyrean elite are always 0

[LordVGames]

Describe the bug
The damage shown after killing an empyrean elite enemy from StarStorm 2 is always shown as 0 and NaN% of the damage. The contributors seem to be tracked correctly, but never the damage dealt.

To Reproduce
Steps to reproduce the behavior:

1. Loop until an empyrean elite spawns.
2. Kill it.
3. Any contributors are shown as having dealt 0 damage as NaN% of it's health.

Expected behavior
The damage numbers should be shown correctly instead of 0 and NaN%.

Additional context
I've only done multiplayer recently, so I don't know if this bug occurs in singleplayer or not.
Empyrean elites aren't spawned as a teleporter boss, or at least I haven't seen one spawned like this. They're spawned as a random event.