Timeline always on top

I got same problem, and finally fixed it because of my angry client.

74-97 line of wordpress-posts-timeline.php

$posts = get_posts( $post_args );
		echo '<div id="timeline">';
		echo '
<ul>';
...
		echo '</ul>
';
		echo '</div> <!-- #timeline -->';
		wp_reset_postdata();
}

I changed echo to $t_text
like this

$t_text = '<div id="timeline">';
		$t_text .= '
<ul>';
		foreach ( $posts as $post ) : setup_postdata($post);

	        $t_text .= '
<li><div>';
...
		$t_text .= '</li>
</ul>
';
		$t_text .= '</div> <!-- #timeline -->';
		return $t_text;
		wp_reset_postdata();

it works!
Thanks for good plugin.