A Potential bug with Mundos skins.

Sorry I dont have a link and im not sure if its just for me or if other people may have this too. when I click mundo in team builder it doesn't give me the option to view his corporate mundo skin, however when I go to the skin section of the store I can buy it right there. I'm not sure if there's any more champions like this or whether its just a problem with my league. if so, sorry for bothering you guys.