Same songs all the time

[rixu_23905]

Hello! I'm starting to be a little bit annoyed by the random mode in one of my playlists. I have around 60 songs in this playlist but it doesn't matter whether I close the app or start playing another playlist, every time I come back to the playlist I always heard the same 20 songs, instead of all the songs in the playlist!!! It's really annoying and I'm thinking about stopping using the app... Can anyone tell me if this issue has any solution? Thank you very much.
Laura.