WP_Query: “post_parent” and “post_type” combination returning strange results

It turns out I have an errant pre_get_posts function: function fgw_parents_only( $query ) { if ( ! is_admin() && $query->is_post_type_archive( ‘project’ ) ) { $query->set( ‘post_parent’, 0 ); $query->set( ‘posts_per_page’, -1); } } add_action( ‘pre_get_posts’, ‘fgw_parents_only’ ); Not exactly sure why is_post_type_archive caused this to show up on a single-project.php template, but I managed to … Read more