Jhin auto attack cancellation bug [Gameplay]

Jhin cannot cancel his last auto attack (the crit attack). You can recreate this problem 100% by simply auto attacking until you have the last shot up, and try to cancel it by targeting a unit and hitting the S key for stop or right clicking the ground to move. You simple cannot cancel his (last) auto. This causes problems sometimes when flashing onto targets, where his auto will go off before or after you flash, i cant really tell.