[GAMEPLAY] Aatrox 3rd Auto-attack, Blood Thirst/Blood Price

Ive noticed with Aatrox's Blood Price/Blood Thirst 3rd auto proc, it has a slight delay when landing the last auto at higher attack speeds (typically 1.35 and higher speeds). In some cases, if I change between the 2 spells, the animation cancels in mid-auto attack for the third auto to land the different animation for the spell, causing a pause in attacks. Its not clear if its suppose to be this way or if its a bug.