The confirm group delete page uses the following template:
But when looking at the HTML for the confirm group delete page the comments concerning the .tpl file are as follows:
<!-- .tpl file invoked: CRM/Group/Page/Group.tpl. Call via form.tpl if we have a form in the page. -->
Presumably this should state:
<!-- .tpl file invoked: CRM/Group/Form/Delete.tpl. Call via form.tpl if we have a form in the page. -->
To see this behaviour on the demo server look here:
then view the page source and search for ".tpl"