aurora_preprocess_block() for blockify incompatible with clean markup blocks.

Aurora uses the $title variable to store the page title that is then used in Aurora's block template for the Blockify Page Title.

else if ($vars['block']->delta == 'blockify-page-title') {
    $vars['theme_hook_suggestions'][] = 'block__page_title';

    $vars['title'] = drupal_get_title();
  }

Unfortunately, if a site is also using the Clean Markup module (as is recommended), the template for Clean Markup Blocks uses the $title variable for the block title.

The variable naming conflict generally results in an empty page title within the Blockify Page Title block.

Using a more specific variable name corrects the issue.

else if ($vars['block']->delta == 'blockify-page-title') {
    $vars['theme_hook_suggestions'][] = 'block__page_title';

    $vars['page_title'] = drupal_get_title();
  }