In all of their beauty, the folks at Microsoft decided it would be totally fine to allow a paid app which does nothing except download a couple of Steam skins, including Plexed. It's completely unapproved, doesn't even function properly half the time, and is a waste of money, with not a single penny going to the people who actually worked on the skins included.
I'm fuming right now and don't entirely know where I'm going with this, but if you're in this group because you bought this app - he was nice enough to link to the group at least - try to get a refund: https://www.microsoft.com/store/apps/9nblggh55b7f
[The complete 4.2.1 changelog] *Changed the way the background is handled on supernav menus, fixing an issue that would cause the menu to essentially "run out" of background color at a certain length *Fixed in-home streaming settings *Changed the background image on PIN pages (Steam Link, Family View, etc) to a key *Fixed positioning of the Build ID on the Local Content page
I think I'm going to start releasing 4.2.X updates much more often - lets me fix things faster than trying to get a big design change tossed into the next X.0 update so that 0 on the end is actually worth it.