[GAMEPLAY] Kayn ult wiffs against fiora

Yo, So i was playing against Fiora, and it seemed to me that while in Shadow Assassin form the ult wiffed sometimes when i dealt damage to Fiora while Parry was active, using the Ult after the effect of parry ended. (All times i used Chilling Smite on her, ) I dont know if i dealt damage to Fiora after Parry ended but i was allowed to Ult.

Step by step? Parry as Fiora and have Kayn deal any damage to you, after that Kayn can ult you sometimes and his ult will go to CD and he will blink to your location.