[GAMEPLAY] Pantheon E can't be canceled/Poppy W doesn't work?

EDIT: It is his W

The cute Pantheon has a little bug. Several times, I tried to block W jump with my W. Unfortunately, he ignored it each time and jumped through it. I did a little research but couldnt find out, that his jump makes him untouchable or something. I really hope, this one is a bug. If not, please just add it in the description. Of course I've downloaded the replay. Here is the game: http://matchhistory.euw.leagueoflegends.com/de/#match-details/EUW1/3098247420/221809820?tab=overview My apologies, if I have overseen something.

EDIT: Got an idea myself.

• Maybe it's just his passive that blocks the W.

• Maybe the indication of his jump lets him block the Poppy W knockback. Im gonna try this out and check if he can block the following AA or not. But in case the Passive blocks the Poppy W and my next AA gets blocked by his W passive, I can't find out if its really so, or if its just a bug of his W (that it cant be cancelled). Or do his passive and W passive stack? (Like, he can block 2 following attacks?) Have to test this without his Passive up I guess. Even so, I couldnt see a "Blocked!" in the game.

• Okay, thats bs, he can only block AA's and Turrets