pagefileSecure not working when template inherits access rights

[dynweb]

When editing a template like this:

• As long as a template does not define its own access rights, the option "Yes always, regardless of page status or access control" has no effect: it "sticks" in the admin interface, but the folder /site/access/files/XXX is not prefixed with a "-" and access control is not enforced. The file is delivered by Apache.
• If the template defines its own access right, it works as expected (by me). The file is delivered by PHP.

It this expected behavior? Is there some good reason why a template must define its own access rights to enforce access control to files?

Thank you for your insights.

Edit: Tested on latest PW stable, pristine install.