Process for changing phone numbers under Manage Users has changed?

Sometime last week, there was a change made to the screen where you manage users. In the past, you could click on an existing record and update the name, phone number, or both. Now, the phone number field cannot be edited. So, you have to delete the existing record and add an entirely new one. This makes the entire process much more time consuming. Is there a setting or something we can change to make this editable?