I've been unable to change my classic skins that I've made and imported as the game would only preview the first five and not let me in to see the rest of the skin when I press the part to see the rest of my skins. This also means I cannot update the skins that were last saved in the character library from the previous update. I do not know if it affects paid packs though, since I do not own a skin pack from marketplace.

To recreate

1. Import a pack containing skins 
2. If character is not classic, delete character and create one using classic skins
3. Attempt to select and save a chosen skin and/or expand to see the skin library

By the way, the unresponsiveness also includes importing individual skin files too. I can click on it a hundred times and nothing happens, but it responds immediately when I press on skins that are locked behind a paywall (as in skins I did not buy).