[Client] Champ selection bug!

Hi I had a problem in my recent game http://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/2842752985/23500323 In champion selection I was unable to pick Janna, and I had to pick Soraka. The enemy did not ban or pick Janna. Possible reasons for the bug: 1.My last game was a remake where I was Janna. 2.My team was messing around with highlighting champions, but at no point did I highlight my pocket pick. I should had taken a screenshot but I panicked since I didnt want to dodge(ty riot for 3 afk checks)... When I tried to press Janna it looked like I had already locked in Janna / It had showed the same icon as when you are highlighting a champion, but it was grey.