Sticky not staying at the top

Hi there,

Although the sticky is displaying with this current loop which ive created, its not keeping the sticky posts at the top. Does anyone know what might be causing the issue?

<?php
					$current_browsing_author = $wp_query->queried_object_id; // Get current browsing author
					$sticky = get_option( 'sticky_posts' );
					rsort( $sticky );
					$sticky = array_slice( $sticky, 2, 5000 );

					$args = array(
				   'post_type' => 'update',
				   'posts_per_page' => 6,
				   'orderby' => 'date',
				   'post_status' => 'publish',
				   'post__in' => $sticky,
				   'paged' => ( get_query_var('page') ? get_query_var('page') : 1 ),
				   );

				query_posts($args);?>
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post();?>
<h4><?php echo substr(get_the_title(),0,58); ?></h4>
<?php the_category(', '); ?>
<p> <?php echo get_excerpt(280); ?> </p>
<?php endwhile; ?>