HTTPS Redirect not working on Virtualmin Nginx

I am using LEMP stack with Virtual which I installed using "--bundle LEMP" while installing virtualmin on a debian9 OS.

When I below settings, The https redirect is not working on any of the domains.

System Settings --> Virtualmin Configurations --> SSL Settings --> Redirect all http to https by default --> yes

However I am able to do the redirect by adding below code in domain.com.conf

server { server_name domain.com www.domain.com; listen ipaddress:80; rewrite ^/(.*) https://domain.com/$1 permanent; }

But I wonder why the inbuilt feature that ships with virtualmin is not working?

Please note I am using Lets' Encrypt SSL.

on other note I wonder what type of Redirect Virtualmin does if that feature is to work? Is it also 301 redirect?

Any help on this would be immensely helpful.

Thanks