Dump the $WP_Query args out to the page for BP Docs queries

troubleshoot-parent-dropdown-menu.php

// We use the priority of 30 because bp_docs_access_protection kicks in at priority 28.
add_action( 'pre_get_posts', 'troubleshoot_parent_doc_dropdown', 30 );
function troubleshoot_parent_doc_dropdown( $wp_query ) {
  if ( $wp_query->query['post_type'] == bp_docs_get_post_type_name() ) {
    echo '<pre>'; var_dump( $wp_query->query_vars ); echo '</pre>';
  }
}