I have a new installation of WP and am using Twenty Eleven. On this page I use the Template: Sidebar Template which from what I can tell uses the sidebar-page.php and it displays fine:
I make an EXACT copy of the sidebar-page.php to another file called sidebar-preinsulated.php and choose that as the Template: Sidebar Template Preinsul for this page and the sideline suddenly drops down below the content:
I have compared both pages using Firebug and cannot figure out why simply changing the file name and choosing this as the template is breaking this page? It appears to be exactly the same? What am I missing?