I often use private playlists and tracks to share material that I don't want to release publicly yet. However, the link often doesn't work for other people. It works for me when I'm logged in to my account, but not on other devices that are not logged in.
(I create the link by clicking the rectangular share icon below the track and copying the displayed link)
Is there a way to make sure these links always work? They seem hopelessly unreliable and this functionality is extremely important for any sort of promotion or networking!