GNOME workstation installation.
Choose 'Change password' from the menus.
Type in a bad password (like 'reboot').
The dialog box goes away, and there is no indication of
(a) if the password was changed (it wasn't)
(b) if not, why not (bad password)

Also, if you choose a good password, there is no confirmation dialog box
telling you that the password actually has been changed.