When you use new Loki's Menu to control Spotify, and click on the spotify song, a new window opens each time you click instead of bringing the existing window to the foreground. see here: http://i.imgur.com/RBYDbee.gifv
This application acts against common expectations, so I'd consider it a bug. Please subscribe to the bug report here so that the devs can ask for help testing solutions. If you want to give the open source devs some extra incentive, try putting a developer bounty on the task.
