Whenever I set the "Favorited" filter on the community server browser to "show", the browser log is void of showing any servers.
The only way to see the favorited servers are to "disable" the favorited filter, and manually search through the pages for them via the "star" indicator being filled white, as you would looking at the browser regularly, alongside non-favorited servers.
An "Error code: 9" shows up at the bottom of the server list box when the favorited filter is set to "show", regardless of any of the other filter's positions/toggles. As well as the server list being completely empty.