Reproduced this many times. Authentic theme causing SSLv3 for server to server connections.
Webmin/cloudmin host is Ubuntu 12.04 and remote system is Ubuntu 16.04.
I have just switched to Authentic theme since I read somewhere its speed has been improved. And it is faster than before. But ran into issue.
All but TLS1.2 is disabled on all my webmin configurations via, webmin, webmin configuration, SSL encryption.
On the Cloudmin/webmin server, when I click 'open webmin' for a remote system, If the remote system has authentic theme on as the default, Firefox complains its using SSLv3 and blocks any further progress. "Firefox cannot guarantee the safety of your data on blahblah.com because it uses SSLv3, a broken security protocol".
Same goes for when I click webmin servers index and try to connect from there.
If I change the remote system back to Grey Framed theme. And try connecting again. Connects fine and https info from green lock Icon says its using TLS1.2.
If I change the remote system back to authentic, Firefox complains its using SSLv3 again.
Authentic is enabled on the main host. But becomes an issued when also enabled on the remote server.
So Authentic is forcing SSLv3 somehow for server to server comms? Or an error is preventing TLS for connections between two authentic systems? Theme should not be affecting the connection type.
Webmin 1.851 and cloudmin 9.3 on the server. Authentic 18.49-8
Remote pc is webmin 1.850. No update showing up for 1.851 on it yet. Authentic 18.49-8 when enabled.