How can I prevent Virtualmin from storing passwords in cleartext? [closed]

I am really surprised at this behavior. In Virtualmin, I can see the password for any SSH user by clicking the "(Show..)" link next to the "Password ( ) Leave unchanged" option in a variety of locations. I have found that the passwords for all users including users with SSH access are stored in cleartext files in /etc/webmin/... This seems like an unnecessary risk! How can I prevent Virtualmin from storing passwords in this manner?

The last release of Virtualmin (3.88.gpl) has the feature "Hashed password storage"

So it's now possible:

Hashed password storage

Storage of plaintext passwords for virtual servers and mailboxes can now be disabled on a per-template basis. Virtualmin will instead store only hashed passwords in multiple formats, which prevents passwords from being compromised if the system is hacked. This feature should ideally be enabled before any virtual servers have been created.