5.16 Darius In-Game Bug

Right as the League client finished patching 5.16, I immediately went to test it out in a custom game. At first I started with my Q, E then my W. But his W is where the bug is. When using Crippling Strike (W), he does the animation for causing physical damage. But if you use that skill right as he does a normal auto attack, the animation does not occur, I don't know if it's a scripting issue, but I think this will be an issue for those who are facing Darius. The reason being is not knowing when he uses that attack can really effect champions who can shield themselves or attempting to time skill attacks. Besides that, everything else about the champion is excellent, thank you Riot for being an excellent development team and creating amazing content for the League Community. This is my first time posting or using the na.boards so I do apologize if I am not doing this correctly.

Summoner Name - Huskos Main Role - Support Main Champion - Thresh