Caitlyn Insta Root and invisibilty when Ultimate.

My friend has been showing me The Caitlyn bug, where she is invincible when using her Ult. I thought this bug would be fixed sooner or later, but it been 2 months now and still nothing..

And now after the mage update, Caitlyn get yet another bug.. Where she lays down a trap and before the animation even get shows you are rooted... This happened when I tested Evelynn in a bot game in the Twisted Treeline.. That Caitlyn was so hard to kill do to that bug and her aim-bot sensitivity.

Their God. Please disable Caityn... I don't want this Bug in my games.