Had this happen mid-game and had no idea what happened to my root. Slowed it down and still have no idea. My friend suggested it struck the enemy ward, as if it had a champion's hitbox. I'm not convinced, but I have absolutely no other ideas on what happened. I also have no idea how to reproduce, more of a freak occurrence in this case. Thought it may be worth sharing anyway.
Might just be the low frame rate due to the video being slowed down but it looks like it hits something and stops going forward for a moment before the visual actually disappears. If anything it appears to hit the center of MF's E, as if it spawned an invisible minion in its center and your Morg Q hit it.
I've played a LOT of Morgana and I've never seen that bug first hand and hopefully I never do.
Obviously... Miss Fortune was playing for the other team and shot down your Q.
On a more serious note, I have absolutely no clue what could have caused it. I might have been inclined to think that Neeko had been invisible, but she was off further back in the lane and therefore did not have enough time to move to the bush to use her W.
Weird stuff.
