LeBlanc gameplay bug in ARAM

So as the title of this post would suggest, I was playing an ARAM against a LeBlanc. After using her clone, the clone didn't quite disappear, but stayed in the same place invisible except for a health bar and a vague outline. During this time the clone was untargetable and I'm not sure if it ever disappeared as the game ended soon after that. As far as I'm aware both teams could see this weird clone. I've tried to attach a screenshot from the game as a link, hopefully you can see it. I've not been able to replicate the bug since but will post back if I encounter it again.