WooCommerce outputs (unused) div in markup

Could somebody help me in explaining why WooCommerce outputs a empty div between the markup.

You can find this div right below the WooCommerce breadcrumb markup when you view the source.

<nav class="woocommerce-breadcrumb"> ... </nav>
   this one --> <div class="woocommerce"></div> <-- this one
    ...rest of markup...

You can find this div on the Storefront Demo site as well, when you view the source.

The only reference I could find in the WC source code is in class-wc-shortcodes.php on lines 733 and 744. Here it is used to get the current buffer contents and delete the current output buffer.

I guess that I am definitly missing something here. Any help in explaining this to me is much appreciated.