[GAMEPLAY] Twisted Fate Yellow Card Stun + Warwick Ult

I was playing a bot game as Twisted Fate. Warwick was one of the bots. While chasing Warwick, I encountered the following bug:

Warwick was running too fast for me to catch (due to his passive move speed). I activated Pick a Card, activated Destiny, selected Yellow Card, and ulted into a bush next to Warwick.

As I arrived, the following two things happened simultaneously: I fired an autoattack at Warwick with the Yellow Card, and he ulted me.

The Yellow Card hit him as he was ulting me, and stunned him. I continued to take damage from his ult, but at the same time I was not suppressed and was able to continue auto attacking and activating other abilities.

I have not been able to reproduce this, as the timing is extremely tight.