System administrator can't update the profile information of another user

Symptoms

1. The documentation for TeamCity Cloud states that administrators can always change the username of any user.
2. Log in to the TeamCity Cloud as a user with the System Administrator role and open any other user profile.
3. The username and email fields are greyed out and can't be edited.
4. The REST API request to update the user profile returns 403: "You do not have enough permissions to edit user settings".

Cause

Some permissions are disabled in TeamCity Cloud, including the ability to edit user profiles. This is expected behavior.

Resolution

This is expected behavior for TeamCity Cloud.

Additional information

The misleading documentation issue is The system administrators cannot edit other users’ email/username