[Gameplay] Odd message in chat ---- DataLogging Category AatroxWHit: Expired Category

The message "DataLogging Category AatroxWHit: Expired Category" appeared in my chat. I did have an Aatrox on my team, but it doesn't seem like the message was supposed to be there.

I'm playing using the Mac client, on a Macbook Pro (Mid 2010, Model: 7,1).

Nothing game breaking here, but it is kind of strange. Could this message be a symptom of the same bug that causes the far more common "taunty" message?