[GAMEPLAY] Darius Auto-Attack Bug

I was unable to produce a video or screenshots because XSplit refused to detect LoL. Anyways, I was playing ARAM as Darius against Shen, Malzahar, Janna, Sion, and Jax. When I would walk up to minions to auto-attack (in the beginning), my cursor didn't show the usual red sword to attack; it was the walk cursor. I died from being unable to actually fight back and when I respawned, I was able to auto-attack again. Not sure what was triggering it, but it happened multiple times in that game.

Not sure if you'd classify this as an auto-attack bug or cursor glitch.