Darius w bug

When darius w's a target that dies during the w animation, he cannot attack again until the w buff is gone.

For a full rundown, you start up w and the buff comes up. You then go to auto-attack and the auto gets cancelled mid attack due to the thing being attacked dieing. Until the w buff disappears, you cannot auto-attack again. This often occurs due to the dot from his passive killing a target you are about to w leaving you unable to reset the stacks onto others.