Roundcube Password Plugin

Trying to get the Virtualmin password plugin working with Roundcube version 1.2.3.

Has anyone had any luck?

Previously, I used the following two links for it to work with 0.8.6.

https://www.virtualmin.com/comment/729806#comment-729806
http://www.virtualmin.com/files/roundcube_virtualmin_password_change.txt

At the site below, the user reportedly got 1.1.2 working.

https://totallynoob.com/roundcube-password-plugin-for-virtualmin/

Operating system Ubuntu Linux 16.04.1
Webmin version 1.821
Virtualmin version 5.05.gpl

I added a bounty for the current bug on Roundcube.

https://www.bountysource.com/issues/34021766-plugin-password-virtualmin-driver-does-not-work-for-user-names-with-custom-domain-name-suffix