Fizz ult vanishes once it reaches its destination 6.24

When playing an aram on 6.24 with cottontail fizz i noticed that one of my sharks that didn't attach to anyone and just vanished. You can see in the link provided that this occurs. This did only happen once in this game and this is personally the first time i've seen this happen. Hope this can be resolved since the ult was still put on cooldown after the use. thanks in advance