Block title is not appearing after ajax update

Problem/Motivation

Hey,
I got the "Hide Empty Cart" option checked.
When i add a first product to the cart (with AJAX) - Cart shows up as a block on a sidebar, but it's lacking the block title.
After page refresh/change the title appears..

Any idea how to fix this? Or any workaround?

Thanks,
Simon

Proposed resolution

      // Hide cart if it is empty.
      if ($hide_empty_cart) {
        $block['content'] = theme('html_tag', array(
          'element' => array(
            '#tag' => 'div',
            '#value' => '',
            '#attributes' => array(
              'class' => 'ajax-shopping-cart-wrapper',
            ),
          ),
        ));
      }
      else {
        $block['subject'] = t('Shopping cart');

        $block['content'] = array(
          '#theme' => 'dc_ajax_shopping_cart',
          '#order' => $commerce_cart['order'],
          '#line_items' => $line_items,
          '#quantity' => $quantity,
          '#total' => $total,
        );

        drupal_add_library('system', 'drupal.ajax', TRUE);
        drupal_add_css(drupal_get_path('module', 'dc_ajax_add_cart') . '/css/dc_ajax_add_cart.css');
      }

This is the code that generates cart block based on "hide empty cart" setting.

Possible solutions:

1. Add $block['content'] = t('Shopping cart'); in the if-block. This makes sure that the title is always displayed even if cart is empty. This however defeats the purpose of "hide empty cart" setting, isn't it?
2. Remove $block['subject'] = t('Shopping cart'); from else-block. Doing this we make sure that block title is not provided by module. It will follow the block title that we give in "AJAX shopping cart" block settings. This change however will break new release of this module.

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A