I am using mopidy with ncmpcpp to listen to files from spotify.
I can add songs to playlist using the search engine of ncmpcpp and save them (using the dummy name test here), which creates;
playlist test playlist test 
on both browser and playlist editor. test has my songs whereas test  is an empty playlist. trying to delete test  under playlist editor asks for the y/n prompt, gives the Playlist deleted message and leaves the playlist intact, trying to delete test  under browser asks
allow_for_physical_item_deletion = yes but after the flag is set, just freezes the ncmpcpp indefinitely after the attempt to delete it
under my mopidy/m3u directory I can only see the test.m3u8
I can delete “test” under ncmpcpp playlist editor, which removes test.m3u8 under mopidy/m3u and leaves me with just “test” (without the ), an empty playlist on ncmpcpp.
I have ran mopidy with
mopidy -v and repeated the steps using a different playlist named sabbath, here’s the log after trying to delete sabbath  under browser
and here’s my
mopidy config output
I could gladly provide more debug output if necessary, thanks for your attention