Media Rack: File Browser vs Favorites

The Favorites page in the Media Rack doesn’t show my favorites.
I know that favorites are secretly added to the MediaBay and have to be scanned to work properly. However my favorites are scanned and work properly in the MediaBay as well as in the File Browser after clicking on Favorites there (see screenshot).
But if I click directly on Favorites in the Media Rack nothing shows up. All filters and columns are reset.
In this example the folder “Defected” containing a few sub folders with audio samples is my favorite.
Any hint is appreciated.