My random has not been working with Chromecast for months.   Their firmware is up to date.   This is a spotify issue, I have been having problems with bluetooth random as well.  I am listening to the same songs every single time.  maybe a little different order on rare occasion.  

When I select some song from the playlist, the next song is always starting over with the first song I added to the playlist.  If there is not a solution soon I will be canceling my service.  Whats the point in having access to a library of music if I am forced to listen to the same songs?  I might as well buy those and own them instead of paying you to listen to the same songs every month.  Quite upsetting.