The orange bar that indicates the selected library on the left-hand pane is not cleared when browsing to Home, Channels, Playlists, or Now Playing as you’d expect.
In fact it appears that the orange bar indicator (and the name flyout on hover when you have the panel shrunk) do not exist for the preset locations (home, channels, playlists).
And those topmost items have a different hover colour.
Busy working on that now 
