Kalista's silent static

Last game, I played Kalista since she just got out of the nerfing room. I think people at Riot did great job in balancing her, but I'm not here to talk about that. In fact, I couldn't hear my static shiv proccing, and the lightnings were darker than usual. Since there was two yasuos in this game, I got the chance to see it only happened to my champ. I don't think I'm gonna play her again tonight so could someone confirm?