allow adding same track to the same playlist
What is the problem you are facing?
Add a track to the playlist A
add this track to the playlist again
it fails without any visible hint on the page, with F12 to view the the response, its code is tracks_already_exist_in_playlist
What are the possible drawbacks or issues with the requested changes?
Sometimes from a soundtrack, a certain track can be followed by many other tracks to perform a continuous music, so the track needs to appear in the playlist for mulitple times.
Also, I think most commercial streaming platforms like spotify or yt music support such feature.
Context
version: 1.2.5