There seems to be a bug related to the secondary navigation in site admin which prevents the user to navigate through the secondary navigation items after performing a search action.

Steps to reproduce:

1. Login as Admin
2. Go to site administration
3. Enter a keyword in the search bar and search
4. After the search, click on any of the secondary navigation items
   1. Although the secondary navigation item is highlighted, the page content related to this item is not displayed.