I'm using the following spotify API
https://developer.spotify.com/documentation/web-api/reference/player/skip-users-playback-to-previous-track/

If you are running raspotify and try this API from here:
https://developer.spotify.com/console/post-previous/

you will see that it put the current song back to the beginning and not to the previous one.
If you try the same with a web player or if the song is played on a phone.
When you run the API it doesn't well call the previous track.

Could you please investigate?

Thank you