confusing or not working UI

[Stooovie]

Working with playlists in Chorus webUI is either seriously buggy or really badly designed. 

Example (all this takes place in Chorus2)

1. I have an existing Playlist A with Content A1, A2, A3...
   2) I want to create new Playlist B with Content B1, B2, B3 that is in the local queue (which is created automatically when playing a folder - in this case, a kids' show)
2. I select "Save Kodi playlist" option from the queue's "three dot" menu. It asks me if I want to save Playlist A (why?) or "Create a new list". 
3. press and name "Create a new list"
4. the new list is created, containing Content A1, A2, A3... in other words, it just redoes the first Playlist A. Playlist with the desired Content B1 IS NOT CREATED

Also, this does not create any M3U playlist.

Is this a Kodi (19.3 as LibreElec 10.0.1) issue or a Chorus WebUI issue?