Themify Magazine

[shazahm1]

When the Customizer is loaded it enqueues this script:

/themify/customizer/js/themify.customize-control.js

In this script, after the pages loads it does this:

$('#accordion-section-themify_options').find('.accordion-section-title').trigger('click');

What this does is force their Customize Panel to be active but since it is not available all you get is the blank Customizer.

Possible fix is to either remove Themify's actions which enqueue the scripts of de-enqueue its Customizer script when the Template Customizer is loaded.

ref:
http://connections-pro.com/support/topic/pro-pack-install-widget-template-issues/