I've had several games where champions would just walk away during my infinite duress. The animation of the infinite duress would continue and I was unable to move while they got away scott free. Also Ezreal was able to E out of it leading us to lose a team fight. Please look into this.
Ezreal's E is normal. He's not using his e after you've casted Infinite Duress. He's using it right before. Since it has a slight channel time, cc abilities that hit him just before the channel is over are either nullified or applied at ezreal's teleported location. You can see this with his E's interactoin with pulls (which is quite hilarious...and frustrating as hell).
As for the others, is it possible that they had bought a Quicksilver Sash? Or perhaps you ulted them just as a banshee's passive came up?
