It works as expected from my desktop and laptop on https://m.domain.tld:port##
Not sure what to think… maybe I’ll try using a simpler non-framed themes if there is one.
It doesn’t seem to be a problem for the server to deliver any of the other themes to my device, and it must recognize the browser agent, because it definitely delivers whatever theme I spec for mobile… except for the actual mobile theme, which only renders
Virtualmin 3.57 on hostname.net (OS Linux version)