As soon as fullnamedisplay and alternativefullnameformat differ, names in footer and user menu differ

As admin – with firstname "Admin" and lastname "User", set fullnamedisplay (in admin/settings.php?section=userpolicies) to 'firstname lastname' (or in the example below 'language' which corresponds to the same in english) and alternativefullnameformat to 'lastname firstname' Save and verify in the footer it says "You are logged in as Admin User" and not "You are logged in as User Admin" Go to Users > Accounts > Browse list of users in site administration and log in as another user. Verify the footer says "You are logged in as <firstname> <lastname>".