📚 angular.io bug

Reproduction Steps**

1. Open angular.io page
2. Click on resources link on top
3. Click on docs link on top
4. Click on browser back button.
   The docs link is highlighted while it should highlight resource link

Expected vs Actual Behavior**

Browser back button does change the page back to the last page user on, and it should also the highlight item of current page. But it is not highlighting the correct menu item