Fireball stops recharging if you are knocked into crit while holding it

[Cruix]

Expected Behaviour

When knocked into crit while holding fireball, it drops and explodes just like if you had rested.

Actual Behaviour

It disappears and you never get the cooldown back.

Steps to reproduce the problem

1. Give yourself fireball.
2. Cast it but do not throw it.
3. deal 101 brute damage to yourself, then heal yourself, and be unable to ever cast it again.