The Emby Theater app from the Windows Store has the overlay come up when you use the media keys, which is supposed to show the name of the song and then the album artist. The theater app is making it show the artist(s), and then the album artist. This happens with all of my songs, all of which have proper names/titles.
Spotify's overlay: https://i.imgur.com/Ws3Jqrj.png
Emby's overlay: https://i.imgur.com/YD90HRo.png
Otherwise, it works normally. I do notice that the windows store app is quite a bit slower at starting songs, compared to the web UI or Emby Theater from the website. It's particularly slow when starting a song after playing nothing, such as first starting the app or after clicking the stop button on previous media.. If you shuffle your library, an artist, or an album, it usually starts way faster and will skip songs much quicker.
Hope this is in the right section. If not, please move it for me. Thanks!