Lots of changes I'm not quite a fan of, but wth happened to the filtering options for playlists. You can't see date added anymore, and when you order it by date added you can only have it going from oldest to newest. Please but back the option so newest songs will be seen first.
Thanks for reaching out here in the Community. Apologies for the delayed response, we just came across this thread.
With the new desktop app you should be able to see the date in which you added songs to a playlist and sort it from newest to oldest and vice versa.
If you're still unable to do this, we'd recommend performing a clean reinstall of the app. This is often an overlooked step, but it can be helpful to get rid of any cache that might be causing trouble.
Keep us posted on how it goes.
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"Music touches us emotionally, where words alone can't." -Henry Thoreau