Supp mission bugging hud at lvl 18

Hi, I'm from EUW server (spain) so sry about my english. I'm here because @RiotSupport told me to report the bug here xD The thing is that the new mission for the ancient coin gives you an elixir who allowes you to upgrade an hability without leveling up your champ. That causes a problem when you reach lvl 18, cause the hability lvl up appears, but you cant upgrade any hability. Soy you have the hud bugged for the rest of the match. Example Image: https://pbs.twimg.com/media/C_5kpFbXsAAwWN5.jpg:large Example gameplay: https://youtu.be/npbM0L1MsrI?t=42m38s