--- src/wp-includes/class-wp-tax-query.php
+++ src/wp-includes/class-wp-tax-query.php
@@ -607,6 +607,7 @@
 		}
 
 		$args = array(
+			'transform_query'        => true,
 			'get'                    => 'all',
 			'number'                 => 0,
 			'taxonomy'               => $query['taxonomy'],