[GAMEPLAY] Ryze ult doesn't cancel Zed's ult.

I found out that during Ryze Realm Warp teleportation time (which makes you untargetable for like half a second) I still got hit by Zed's Death Mark and this issue happened 2-3 times in one game(my timing might not be perfect all the time so im not sure about the others). Thats pretty significant for ryze skill ceiling so I wish it will be fixed asap since ryze is one of the better assassin counter/lockdown champions and being able to dodge certain abilities makes him more consistent if you practice enough. I consider this to be a bug because ryze ultimate is able to cancel some abilities like Karthus Ultimate and it feels pretty inconsistent to me if its intentional.

Steps to reproduce:

1. Zed uses ultimate on Ryze
2. Ryze uses well timed ultimate right after
3. During invulnerability frames Death's Mark procs damaging Ryze