[Client] Achieved a mission and gained no reward

I just played a match in which the opposing team forfeited and we won. Upon going into the lobby the screen showed that I had won the achievement "Glory for Noxus". After exiting the lobby I went to see the new icon that we would win for said achievement, but I did not receive it. I restarted the client to see if it hadn't updated and checked my mission complete board to see that I still had the achievement, but still no icon. Is anyone else having this issue?