[GAMEPLAY] Jinx Ult Disappears

Yesterday I was playing as Jinx, and after firing my ult the projectile disappeared after maybe a quarter second. No explosion, nothing hit. It should have gone on to hit the enemy champion, but nothing happened so it seems it wasn't just visual. I recorded the game with baron replays, and I posted a video of it: https://youtu.be/xa8skf1C1EI

It was very odd. I can make the baron replays file available if it helps or describe anything in more detail. I cannot reproduce it and have never seen it happen before. l play Jinx on almost a daily basis. Nothing about this game was out of the ordinary.

Also, this is different from the Jinx ult not detecting a hit bug. The actual projectile just vanished.