How to lock right bar configuration?

Hallo, some weeks ago I reinstalled rhino after a format and I’m unable to retain my right bar configuration. I’m used to separate layers as shown on picture to have proprietis and layers always visible but every time I start rhino (new drawing or loading a 3D) I always get the tabs collapsed like the default layout. I remember I never had this problem, rhino used to save my last layout. How can I solve it.
Thank you!