[GAMEPLAY] Ghost Poro doesn't disappear if used on an Ivern bush after the bush expires

As title says, Ghost Poro doesn't disappear if its used on an Ivern bush after the bush expires. I'm pretty sure this is unintended because having a permanent 'ward' in say Baron areas, is really broken, as enemies can't do anything about it. Walking near the Poro does nothing.

1. Ivern uses his W
2. Someone with Ghost Ward rune walks into it and activates the Poro
3. Wait for his bush to expire
4. Ghost Poro stays in bush

10/10 Reproduction Rate