in left naviagation panel i have plenty of folders containing playlists. if the folder contains only regular playlists, then clicking on folder's header show it's whole content in the main panel (so tracks from all subplaylists altogether in one view)
However it doeasn't work when folder caontains a mix of playlists and autoplaylists - clicking on the header shows no results in main panel, as if the whole folder was empty.