The upgrade is a red herring unless you have upgraded from a very old version of MODx; it's an issue with all MODx versions from at least 1.0.2 or thereabouts.
I think the issue is something like this... If your manager user is not assigned to the document groups on the list that should appear under 'Access Permissions', then it doesn't get displayed - which is a right pain if you are only using document groups for front end
Normally there is complete separation of webusers and manager users in MODx, but they both use the same document groups, hence the issue.
I'm not sure why nothing is displayed at all in your case, but suspect there is a managermanager problem. Try disabling it to confirm this.
PS. Google is your friend: