Global password reset does not send email to users

Summary

No emails to set the password are sent to users when the site-admin reset password via the global password reset in User Management.

Environment

JIRA Cloud v1000.695.1

Steps to Reproduce

1. Login as Site-admin
2. Go to Password Policy section in User Management page
3. Click on Reset passwords now and below message will show:

   • All users will be logged out immediately and receive an email with instructions on how to reset their password.
     You will be logged out immediately. Do you wish to proceed with this reset?

Expected Results

All users will receive emails to reset password as per stated in the dialog box

Actual Results

No emails received by all users

Workaround

Ask all users to manually reset their passwords via https://instance_name.atlassian.net/login/forgot