what the bloody hell? Why isnt the playlist catalogue using the file browser?
I'm guessing it doesn't use the file browser proper to show custom actions/context menus.
It does use ft_load to load the list, but then filters the result to only show playlists (the filtered result list is the limit). Temporarily changing the setting to "Playlists only" should work, even if somewhat ugly, and that should avoid the need to filter, and thus have a fixed limit on the number of entries.