Radiant Wukong Skin Bug

So I was playing Ranked today and I went Wukong top. Keep in mind, I have no skins for this champion. Well, in the loading screen, I had the Radiant Wukong skin. I had it for the entire game, but when I tried to intentionally use it, it wasn't available. the only thing out of the ordinary was that me and a friend traded champions in Champion Select.