Merge pull request #15625 from atm-florianm/FIX/12.0_error_when_adding_lines_on_order

FIX 12.0 - error when displaying lines on order after adding a new line

htdocs/commande/card.php

@@ -953,7 +953,8 @@ if (empty($reshook))
 
 				if ($result > 0) {
 					$ret = $object->fetch($object->id); // Reload to get new records
-
+					$object->fetch_thirdparty();
+					
 					if (empty($conf->global->MAIN_DISABLE_PDF_AUTOUPDATE)) {
 						// Define output language
 						$outputlangs = $langs;