[GAMEPLAY]

It's only happened the once to me as I don't often play either of these champions (Was in Aram). Anyway, It happened at the end of the game (Which we were losing horribly so I'm not really upset that the bug happened then) I used Kayle's ult on Urgot just before Garen used his ult on Urgot. For some reason Garen's ult still killed Urgot despite Kayle's ult still being on him. The ult defiantly didn't have time to run out as it had just been used, and I know it was successfully cast on Urgot as I received the cool down for it. Of course, if Garen's ult is suppose to be work even when Kayle's ult is on a champion then completely ignore this.