[IGNITE] Zhonya cancels Ignite for the remaining duration

Situation: Swain casted ignite on ahri and walked back, Ahri with less than 1 bar of HP used Zhonya Hourglass immediately. She walked away without the remaining ticking of ignite, we all saw that through ward vision. I wish I had LoLreplay to record that. Any1 ever saw that?