Zil's Ult!

Fairly simple, and not a big deal, I was playing Zilean, I was purple side in an ARAM (Howling Abyss) And I dove a member of the enemy team. I used my ult and was then suppressed by the enemy Warwick, and killed by tower, I then died, with my ult buff still clearly on my body, and the buff on my bar. While its no big deal, we won anyways, bugs must be reported to get fixed! Later in the match a similar thing happened but on an ally, and they survived and were properly resurrected by my ultimate.