Thinking about it, why can Kennen still use his ult in Zhonya's?

Ryze's ability to use his ult while in zhonya's was removed because it was too powerful, but here we have Kennen who has ALWAYS been an annoying little rat able to chain stun an entire group while taking no return damage just by flashing into the enemy team and pressing two buttons. I've never liked Kennen and always thought he had a problematic design but no one plays him hardly so we overlook him, but this I feel needs at least some consideration considering the scope of the effect on his abilities.
Report as:
Offensive Spam Harassment Incorrect Board