How to reproduce: Shoot tornado until it has absorbed 500k white damage. (you have dev hacks, increase your base damage if you cannot reproduce)
Expected behavior: Tornado will still function regardless of the amount of damage you shoot it with (damage numbers should pop up when shooting it)
Actual behavior: Tornado stops distributing damage to enemies inside when you shoot it (and no damage numbers pop up). The tornado has effectively "died".
Video evidence: https://streamable.com/nwanq0