Operating System: 10.15.7
App ver 1.1.44.538.g8057de92
Spotify should handle percent-encoded URLs /URIs such as
spotify:track%3A1BncfTJAWxrsxyT9culBrj
the %3A == colon (:) so, equivalent is :
spotify:track:1BncfTJAWxrsxyT9culBrj
I have apps on my system that encode the URLs and I can't link to Spotify from there because it's not interpreting the %3A and decoding it. See reference bug from iTerm2 for more detail:
https://gitlab.com/gnachman/iterm2/-/issues/9220