Ticket #22943: 22943.2.diff

wp-content/themes/twentytwelve/content-page.php

@@ -10 +10 @@
 
         <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
                 <header class="entry-header">
+                        <?php the_post_thumbnail(); ?>
                         <h1 class="entry-title"><?php the_title(); ?></h1>
                 </header>