I just wanted to leave my bug report, don't know if you are aware of it.
I am using Virtualmin GPL. Yesterday I disabled one website, and today I wanted to re-enable it, but Virtualmin showed "Disable Virtual Server" instead of "Enable Virtual Server". I resolved an issue by second time disabling that domain, and it showed me needed "Enable Virtual Server" so I was able to re-enable it.
I most likely will not be back here for quite some time, so do not bother to post back.