@Jason Carr, it was brought to my attention by a user on Discord that in the new edit window changing the default facing game wasn't working via the additional apps tab. I can confirm I'm seeing the same behavior from it. It creates a message saying that it will be overwriting the metadata already there but then after closing the edit Window the same game is still the facing game. As a work around until this is fixed you can go to the launcher tab and edit the path to reflect the game name that you want to be the facing name and those changes will save.