Katarina Q's disappearing.

I've had this bug before, no idea how I can help explain it.

Normally when I post bugs, I include videos of the bugs in action, however what happened in my client during the game does not match what happened during the recorded replay.

In-game, Katarina on my Client side, _**Clearly **_threw a Dagger that bounced to 3 units, dealing 0 damage, then falling on the ground and disappearing forever without the ability to proc it. It also went on Cooldown. This has happened multiple times to me occasionally, in my Kat games, however today when it happened, I thought for sure I would be able to record it and report it, only to find, during the recording of this bug through the Riot replay system, Katarina does not even throw a dagger, and just stands there looking at the minions.

Anyway I thought I would post that this is/has happened to me, and I'm sure the next time I screen capture it with Plays.tv, it will be more visually interesting, but it has been a reoccurring bug for a while now, while not apparently easily to reproduce, it is very annoying depending on the time it happens.