Incorrect content displayed

Hello everyone,

I have a page set up in WP with some content. In a template to display it I display the content of the page as following:

<?php if (have_posts()) : while (have_posts()) : the_post();
  the_content();
  endwhile;
endif; ?>

Which is correct.

Then in the template I choose all posts of my Design custom post type and loop through them. Each Design custom post has got native WP content, which I try to display. However, instead of Design custom post type content the content of the page gets printed.

Here is the code where I loop through all Design custom post type posts and overwriting $post to a current Design post.

<?php //get all Design custom post type posts
$design_templates = get_posts("post_type=design");

// Display all Design posts if any
if(is_array($design_templates)) {
  //overwrite $post
  foreach($design_templates as $post) {
    $design_template_meta = get_post_meta($post->ID, 'vulcan_meta_screenshots', true );
?>

<h3 id="<?php the_title(); ?>">
  <?php the_title(); ?>
</h3>

<?php the_content(); ?>
<?php } // endforeach
} //endif ?>

So in the loop the $post referes to the current Design post. It seems that $post->ID and the_title() work correctly. However, the_content() still displays the page’s content, but not the current Design post. I don’t understand why.

Would really appreciate any help or explanation.

Many thanks,
Dasha