Steps to reproduce the issue

Under the Template: Options there is a selection for Preview Module Positions. When this is Enabled and the URL of the site is appended with ?tp=1, all positions should be displayed even if there are no modules loaded into them.

Expected result

All positions should be displayed.

Actual result

Casiopeia has 16 positions, but only 5 are displayed when no modules are loaded on the page. i.e. topbar, below-top, breadcrumbs, main-top, main-bottom and debug.

System information (as much as possible)

Under normal operation templates use the countModules() function to decide if a module position should be displayed.

Additional comments

There is no point in the Position Preview if you can't see everything. i.e. All 16 positions in Casiopeia.