Ticket #39968: 39968.1.patch

src/wp-admin/includes/class-wp-media-list-table.php

@@ -100 +100 @@
 
                 $this->set_pagination_args(
                         array(
-                                'total_items' => $wp_query->found_posts,
-                                'total_pages' => $wp_query->max_num_pages,
+                                'total_items' => array_sum( (array) wp_count_attachments() ),
                                 'per_page'    => $wp_query->query_vars['posts_per_page'],
                         )
                 );