bard and kalista

So i recently bought kalista and in the first pvp match with her i was against a bard . A few times when he stunned me with his q i kept autoattacking(my aa speed was quite high, around 1.9). I have not tryed to recreate this bug on my own, but as it happened a few times i would like to inform riot about the possibility.Would be great if someone tested it.

P.S. i think this happened when i got stunned against a wall.