Darius W Bug

Darius's W has always been a bit weird. If you proc your W on a minion, and the minion dies before the W goes off you will freeze for a second and be unable to do anything. Then the W will go off later. In the above clip I capture the W bug, I flash ult, and then cast my W on swain. The W goes through the animation, but no damage is dealt and I am left unable to move for a second. Then when swain moves back into my range, the W is cast this time successfully.