Custom skins / Change Gamertag not working on Amazon Fire TV

Amazon fire TV running V0.15.9

Just attempted to load in custom skin but when you click (press a on the game pad) on the browse button it doesn't work.
Also when attempting to change gamertag name you have the same issue - when you try to select it nothing happens.

*Had posted this as a comment in another thread but as it was marked as resolved have reposted the issue.