Artwork not displaying in playlists?

[Lib]

I have an issue with the last few releases where album artwork won't display in playlists. A smaller issue is playlists now also displays the filename rather than song name/title. So if for example the file is called 01-Song.flac it will show this instead of 'Song'. These both change when I actually play a track in the playlist, the album art will show and the name of the song will show without the 01.

I can change the filename issue easily in my media library but I really miss the album artwork not displaying as it makes it easier to scroll through long playlists. I use .m3u playlists and have 'prefer embedded art' option selected.

Thanks for any help with this