Authenticated users missing from users_roles table I have created several authenticated users in my site through the admin/people/create interface. However, these users are not showing up in the users_roles table. Is this a known issue or am I doing something wrong.

When creating these users I used fake emails, so authentication emails where not received. However, I've turned off the "require email authentication option." Also, when using dpm() on a variable the contains all the users created from a user_load_multiple I can see that they have a 2 in the user role. So why is it not in the database?
It is not an "issue" - but the authenticated user role is not registered in the users_role table.  For this type of user, the status is determined by the field statusin the users table.

AFAIK, every user registered in the users table is considered having the "authenticated user" role, so there is no need to explicitly register this role in the  users_role table. Instead, users having this should have their status set to "blocked" when you want to "strip" them of any grants.