sound familiar - https://forum.virtualmin.com/t/package-upgrade-webmin-2-013/118848 It was identified as a caching issue. However it was a reboot that fixed it - pretty drastic I know! 
sound familiar - https://forum.virtualmin.com/t/package-upgrade-webmin-2-013/118848 It was identified as a caching issue. However it was a reboot that fixed it - pretty drastic I know!