[Gameplay] Hecarim Devestating Charge bug.

While I was playing in a ranked match the other day, something happened when I was attempting a gank on top lane as hecarim. As any Hecarim player would do I activated his E called Devestating Charge and ran into the lane from the river. I was attempting to gank the enemy Rumble. As I charged in, I went behind Rumble so that when I hit him I would push him backwards, towards my teammate, but just as the hit landed and I jumped through Rumble, he didn't come with me, but instead was pushed in the direction he was already running, towards his own tower, letting him slip out of our reach. His flash was down so I know that is not the cause for the issue. As it happened, I remembered it had happened before recently, but sadly I am not able to recall exactly what game it was. Consider either hotfixing this or bringing it into the next patch.