Reset password option is not working for supplier contact using supplier portal

Summary:

Email notification is not triggered for Supplier contact using supplier portal even reset password template is enabled

Content (please ensure you mask any confidential information):

Supplier is clicking on 'Reset Password' link through supplier supplier. After clicking on link, Pop up message is showing - "A new password will be emailed to the contact." but supplier is not getting any email notification. All the required setup and supplier role access is there & Reset password template is also enabled.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):