For a Cloud Infrastructure subscriptions, when going to the Virtual Server page and attempting to change the password, there is no email notification sent to the user.
At the same time, the notification is sent, when the user presses 'reset' button.
The behavior is intended: when the user changes the password, he sets the password he needs and does not need to get notified. When the system resets the password with autogeneration, the user is notified by email.
Contact Odin Technical Support and request to change the product behavior, if the notification is required upon manual password change.