(GAMEPLAY) Tahm Kench W Bug. Minion dies, no gold, placed on CD

If you devour a minion right before it dies to ally minions, the minion will disappear, and no gold is granted. Devour (W) is placed on cooldown.
Animation (Eating the minion) still occurs but fades away (no spitting animation).

Part of the problem is how the animation of the W still continues even if the minion dies. This can lead up to a full second added to the Devour's Cooldown. Sometimes the recast of Devour comes up, which cannot be pressed until the animation fades away. The minion inside of him comes out and dies.

This can be reproduced multiple times in Practice tool, Customs, and Normal games following these steps:

1. Hop on to a practice tool or a custom.
2. Wait for ally and enemy minions begin to fight each other.
3. Wait until enemy minion is low health (~50 - ~60 health is enough)
4. Cast Devour on minion.

Minion should die regardless of whether the animation occurred. Minion usually appears dead beneath Tahm Kench.

Apologies if this bug has been reported before.