Royal TSX Items do not show and only "Filtered by: Favorites" show up

 As per:

https://support.royalapps.com/support/solutions/articles/17000065344-where-are-my-documents-stored-

Follow those simple steps to solve it:

You accidentally activated "Show only Favorites" but don't have any favorites
Solution: Disable "Show only Favorites" by clicking the yellow star button in the bottom left corner of the navigation panel (sidebar)