I have more than one copy of the same game on different platforms.

When I search for the game it only shows on one platform. Even though I also have it on other platforms. Yet when I manually go to the platform and point to the game in the list it shows all the platforms I have it on with there associated icons. Thus allowing me to select what platform I want to view/install it from.

Solved: When you select a game. The top bar will show how many copies of the game you own. Select it to show and select what platform you want to view the game on.