Sorry if this is old.

Steps:
1) Start normal queue Summoner's Rift match
2) Pick Shaco, classic skin
3) Loading screen shows his name as "game_character_skin_displayname_shaco_7"

Can't provide pics because my comp won't screen cap the loading screen.

Are you picking the skin that says Shaco, or classic? I didn't try the classic skin, but when I tried to use the masked shaco skin (it appeared as the default skin and was simply called shaco instead of classic but I assumed it was the masked shaco skin as it's the only one I have unlocked) this is what happened to me.

check the mask shaco thread, its already been addressed