https won't show "Domain ... is not available" notice.

I had to temporary disable a client domain. So I set both HTTP and HTTPS to "Webspace disabled". Accessing the HTTP URL it will show correctly the "Domain ... is not available" notice, but HTTPS won't! In stead it shows another website that has HTTPS active. In my case it rather inconveniently shows the database administration tool.

I know I should rely on "security through obscurity" but still the same I think we should not make it too easy to find this tool! The expected behaviour is that both HTTP and HTTPS show the same not available page.

This is for Ubunu 12.04 LTS and Apache webserver.

Now even when you fully disable HTTPS, it still responds with the same database administrator. This means that just https access to any domain will show my database administrator. I consider this is a security risk.