I have an issue in that my sliders are showing up as double sliders. I think it has something to do with the collapsable set being mapped to a rest return.
I have shared my application so you can see what is happening.
http://appery.io/app/view/21f028ac-df...
Click on a playlist on the left side and expand any of the collapsable components that show up on the right hand side. You should see the issue.
Thank you!
Matt