Category post count is not correct

Question

When I go to Posts > Categories, some categories show that they have a post. See screenshot. But there are no posts linked to that category. When you click on that "1"-number, no posts are shown.

This is an issue because my blog page shows the category title and description even if there are no actual posts linked to that category (Wedge-system - see screenshot).

This is how I loop over all the categories and show the posts from that category:

<?php
$loop = new WP_Query( array(
                            'post_type' => 'Post',
                            'posts_per_page' => $post_per_page,
                            'tax_query' => array(
                                array(
                                    'taxonomy' => 'category',
                                    'field'    => 'id',
                                    'terms'    => array( $category->term_id ),
                                    'operator' => 'IN'
                                ),
                            ),
                        )
                        );
?>

<?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
    /* post template here */
<?php endwhile; wp_reset_query(); ?>

Answer 1

You're a post type that doesn't exist, there is no Post post type, did you mean post?

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Sidenotes:

• wp_reset_query is only for use after query_posts you should be using wp_reset_postdata instead.
• There is no if ( $loop->have_posts() ) check so if no posts are found there is no message and it looks like the page is broken
• This page would be much faster if you used category archives for your category archives, then used pre_get_posts to modify the query, instead of a page template and a brand new custom query
  • if you are doing this on category.php or archive.php then you're doubling the number of queries so that you can change posts_per_page, use pre_get_posts to change it instead