I’ve seen these duplicate playlists many instances:
I by no means use any of them, and continuously delete all 4, solely to have them reappear the subsequent time Music is launched. Once I delete them, they keep away till exist, however they’re there originally of the subsequent session. At present, I deleted all 4 and exited Music instantly and re-launched it. There they’re, with no sync of any gadgets. iCloud music library is OFF and has been all alongside. This has been occurring for a lot of variations of Music and MacOS, and on not less than two totally different laptops. On 26 June 2023, there have been 4 of every, however that shortly went again to 2.
Apple has been silent on the bug report that I made in February 2022, so I believed I’d verify right here whether or not anybody is aware of the trigger and/or the repair.

