How to allow files to be selected in the Libraries section explorer?

Question

Windows Server

When selecting a file through Explorer from any application, for example: outlook (attaching documents), any browser (selecting a file) and the like.
We click in any application to open a file, the explorer window opens and on the left side, in the quick access panel, in the "libraries" section, the "documents" subfolder does not display its insides, but simply transfers the selection to the folder above.
If you do not open through the application explorer, then everything is in order.
A user with admin rights, Google gave me a fig, I ask for your help on how to solve this problem.