[Gameplay] Aatrox "Dashing" While Chasing Champions

I've been playing Aatrox quite a bit the last few days, and I've been encountering a bug where Aatrox will "dash" towards an enemy champion that's his auto attack target while chasing. More accurately, he slides very quickly about the full width of a minion, towards his auto attack target, so close that the champion models are nearly colliding. He's not "blinking" the distance, he's dashing quickly, almost as if he's taking an Ivern's Q dash.

I haven't been able to reliably reproduce the bug, as it happens very sporadically, and about once in every five or more games. I'm going to try and capture it with recording in the days to come, as well as paying closer attention to possible triggers. The champions that this bug has happened against have been Rumble and Urgot, as well as one or two others that I can't recall accurately.