diff --git forkSrcPrefix/src/wp-includes/class-wp-query.php forkDstPrefix/src/wp-includes/class-wp-query.php
index f683a52bd108011148b2c76c23dcc78bffc57067..5471d9a9102f5e7de0869090e1e56e0612368449 100644
--- forkSrcPrefix/src/wp-includes/class-wp-query.php
+++ forkDstPrefix/src/wp-includes/class-wp-query.php
@@ -2135,6 +2135,9 @@ class WP_Query {
 		}
 
 		// Parameters related to 'post_name'.
+		if( '' === sanitize_title_for_query( $q['name'] ) && true === $this->is_singular ){
+			$this->is_singular = false;
+		}
 		if ( '' !== $q['name'] ) {
 			$q['name'] = sanitize_title_for_query( $q['name'] );
 			$where    .= " AND {$wpdb->posts}.post_name = '" . $q['name'] . "'";