Hey!
Thanks for the report! I can poke around today and see what's going on. I.. don't think a new asset needs to be created, but I could be wrong. We'll figure it out! ^-^
Hi Katey^^
There's another thread http://boards.na.leagueoflegends.com/en/c/story-art/Utw7oLEH-aurelion-sols-portrait-in-the-after-game-screen which has a handful of champs/skins with the same issue. I've been going through them and meaning to post something via the PBR since there are others, but since you're going to poke around I wanted to give you a heads up.