Playlist reverse mode is not working on music playlist

[jdeksup]

I am trying to sync a music playlist from Youtube to my local folder.
The first download works great, but next download don't include added musics on that playlist.
I find that this issue has already been fixed for TV Show presets (#759)
but could you help me to make it works for music presets ?

[jdeksup]

I find a workaround for now where movie is added automatically to the top of the playlist:
Go to normal YouTube and select the playlist, then click the 3 dots next to share button. After that select Playlist Settings and from there turn on "Add new videos to top of the playlist"

[jmbannon]

A better solution might be to disable break_on_existing. Because when adding videos to the top of a playlist, it will change the playlist index for all the other videos. Imagine downloading the first vid with playlist idx = 1, you add another vid, that too now has playlist idx = 1.