Not sure if this helps, but I can suggest what I know. I see what you mean about the 'like/unlike' buttons being where the shuffle usually is. I haven't seen that before, however I mostly use Spotify on my iPhone so I'm not so familiar with the desktop. I checked through 'Settings' but couldn't see any options there. Are you a premium member? Not sure if the new Spotify updates have possibly changed for non-premium members maybe? The only thing I can suggest sorry is if you have a Mac, the 'Playback' menu (from the drop-down bar at the top of the screen) has shuffle as an option about midway (command S is the shortcut). I'm not sure what the shortcut is for Windows systems but if you can search that, maybe that will work? I did a quick search but couldn't find it. Maybe try Ctrl S and then check to see if it's shuffling? The only time the 'like/unlike' buttons appear for me, are in 'Radio Stations', so I'm not sure why it's coming up on your regular playlists. I hope you get a workable solution.