Shows unsecure elements on secure pages with "Switch back to http pages when there are no matches"

Hi,

this is a really annoying thing and I don't know how to get around this.
If I turn on "Switch back to http pages when there are no matches" it suddenly shows a warning on https-pages. If the feature is turned off the warning goes away. I compared pages with secure pages module activated and deactivated and it doesn't show any difference in the html-source. There must be some bug in the module.
I tried different techniques listed in the issue queue but none of them helped.
Is there a way to fix that?
Is it being worked on already?