Music App version 1.4.6.32 does not display or save playlist changes

It isn't your phone. I have an iPhone 15. It's got nothing to do with the phone. Nice job documenting the various complaints. I've also read that this is similarly broken for Sequoia users. My personal concern is that Apple will only fix this in Sequoia, leaving Sonoma media producers who cannot yet update high and dry. For me, this problem is a nightmare and is completely destroying my workflow as well as my recreational method for enjoying music.

SOLUTION/WORKAROUND: Nope, but I figured out the nature of the problem and a workaround. You must add or pick a playlist image when renaming or creating a playlist (and also most likely folders as well). Since I posted this on various threads, people are telling me that it is working for them. Note that you must do this after a clearn start of the Music app. It won't work on a playlist after trying to rename it without an image.

Thanks for posting this, I'm a DJ and now thinking of saving all my playlists in Rekordbox instead of Apple's Music app. I'll definitely give the photo option a try.

I'm also having an issue deleting a playlist or playlist folder. Once I delete, the sidebar still shows it and won't disappear. I'll try adding an image, then delete to see if that helps. Hope Apple fixes this issue!! Most DJ software doesn't support Sequioa at the moment, so I cannot just update and risk my tracks not playing at live events.

So has Apple responded with any solutions yet?

Sequia doesn't fix this issue either. I don't blame you for thinking about alternatives. Apple isn't instilling a lot of confidence by neglecting these problems. There are a lot of threads about this. I like your idea of adding an image in order to delete a playlist. I bet it will work.