Collapse issue

  Can someone please help me? I can not seem to get my boards to collapse, as shown in the picture. I have gone through the settings, and have it set to allow it to collapse, but, it won't. What am I missing?

Thanks 

That feature was removed a while back do not plan on bringing it back.

  okay, well, thank you anyways....

I will remove the interface option one day when I get time to work on it.