Verified domain instances, admins change user's full name of a private user, receive "Successfully updated" yet the changes were not accepted

Steps to reproduce

• Admin has the Domain verified in the instance
• Navigate through the User Management
• Try to update the user's full name of a user that is currently set as private.
• User management shows the message "successfully updated."
• The changes were not accepted

Expected Result

Admin would receive an error such as "The Atlassian Account is a "private" account so we can't update the user's details", and full name change fails.

Actual Result

Admin receives "successfully update" message, but the user's changes don't change.