Since the Nether Update was released, the "Owned Skins" section of my Profile is empty. I can still select skins I own (e.g., from the Norse Mythology Mash-Up pack) via the Marketplace, but I cannot from the actual Profile skin selector. Even when I do select a skin via the Marketplace listing, it disappears the next time I log in, leaving me with the default Steve skin. 

This problem is present on both the Xbox One and on iOS. It has persisted even after uninstalling and reinstalling both the game and the packs that I own.