Darius ultimate bug.

So I've seen this a few times since season 6-7 and figured I should write about it. When I got to use my ultimate on someone as Darius, and someone else steals the kill milliseconds before my dunk hits, it will still go on cooldown, but when I ping it, it will tell me it's ready. During the ultimate (aiming at Lulu) https://cdn.discordapp.com/attachments/248146527162335242/410933575861403648/unknown.png Still during but zed killed her before my ultimate lands (Note no cooldown) https://cdn.discordapp.com/attachments/248146527162335242/410933850781384704/unknown.png Milliseconds after, dunk goes on cooldown, and there are no hit or damage points from my ultimate on Kog. Still goes on cooldown. https://cdn.discordapp.com/attachments/248146527162335242/410934413019447296/unknown.png