Elementor (ADD NEW SECTION & ADD TEMPLATE) disappear with sidebar

I have used Generatepress with elementor to build two successful website, its amazing.
But just yesterday when starting new website, every time I hide sidebar from generate press it hide all elementor content even the two button (ADD NEW SECTION & ADD TEMPLATE).
I tryed to remove and reinstall and activate all plugins and compare version of wordpress elementor and generatpress with my other website wich work fine, All same version.

Any idea why this is happning?

I am using:
WordPress 4.7.3
GP Premium 1.2.96
Elementor Pro 1.2.3