Gragas Q Bug

I just played a ranked game as gragas and I threw a Q barrel and then it disappeared. From there I could not use my Q anymore. I restarted my client, no fix. I restarted my key binding settings, no fix. I changed many things on the settings,no fix. This seems like a problem that happens to many players (I looked it up on google and youtube) and needs to addressed as soon as possible. Since he's such a popular champ. I would hate for an lcs player to go through the same thing since the champ is played so much in the lcs. Please take this Discussion into consideration. Ty have a great day