End Game Screen Incorrect [CLIENT]

I am a level 30 summoner, playing as level 5 Dreadnight Nasus Plague (Green) . The opposing team surrendered at 20 and it took me to the end game screen. As you can see in the picture, It showed that I had lost as a level 1 Aatrox and said I got 999 IP and 9999 experience towards my level, which is already 30. I'm a level 5 nasus but it showed me being halfway through level 1. Everything was fine when I left the screen, and even the match history showed everything correctly. I did not actually get any level points as Aatrox or 999 Ip points, so this was just a bug in the end game screen. I haven't been able to replicate the bug yet but I will try a few things and post back as soon as I find out. More details can be seen in the match history here: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2126460610/201687616?tab=overview