[Client] Wrong champion pictures on profile

http://i.imgur.com/VznqizR.jpg https://embed.gyazo.com/3e658e5843070390b09d20c6108cfb8a.png

Look at Janna, Sivir and Tristana. Some champions in the Champions tab on ones profile do sometimes change their picture. I could not reproduce it, it happens completely randomly every few days for me. Sometimes more often, sometimes less.