Yes, I know it has been posted already a few times but the thing is I just installed fresh Virtualmin and the problem persists. Can’t it be simply fixed somehow by releasing a patch or providing a manual fix, please? This is frustrating.
We did release a fix for this! Webmin 1.852 was rolled out specifically to fix this problem, and I can’t reproduce it on a freshly installed system.
What distro/version are you running?
What version of Webmin and Authentic Theme do you have?