Can't edit constraints

Hello I can’t edit the constraints on my Cloth component.

Here is what I do:

  1. create an empty
  2. add Cloth Component
  3. add a simple plane as mesh

When I then click on edit constraints the window that is supposed to open doesn’t show up ?!
I am using Unity 5.5.1f1

What am I missing?
Thank You

You set layout in mode"default".

still cant