Vayne's Q dodges everything... WTF!?

Agreed she dodges too much, it's like brand, Ahri, Annie and a few other champs being able to still use their abilities when they are snared by lux it shouldn't happen..

Because some abilities are made in a way you can dodge them unless you're in a specific position, example: you can flash alistar's combo even if the first part is a knockback and technically you should be cc'ed when it hits, but if you have an ability that replaces you, it can be dodged.