Lets head off the flamers first....
1) No Banshee Veil wasn't involved, spell/skill cancellation of any kind was not even present in the game.
2) I know how to play Gang Plank, for that matter the person playing Jax knew how to play
3) Yes I made it a point to test this....
Now to the bug...
I have noticed that Jax has a 100% Dodge Chance against Parrrley. I was recently in a game, playing Gang Plank, and an opponent had Jax. Now the person playing Jax was good, and I give him/her credit for that. However the entire game Parrrley couldn't hit Jax, he had a 100% Dodge against Parrrley.
Now I am not saying he dodged almost all of my Parrrley, I am saying he Dodged EVERY parrrley. I even went out of my way to find him, and shoot him. Every time to watch it miss. I understand Jax has an extremely high Dodge rate, but this is crazy. My Parrrley would miss, yet I could walk up and slap him with my sword.
Again, this was a 100% Dodge rate against Parrrley, without question. Is this a known bug?