Issue #2592025 by joelpittet, jordana:...

Issue #2592025 by joelpittet, jordana: template_preprocess_field_multiple_value_form() remove nested render arrays

core/includes/theme.inc

@@ -1600,9 +1600,7 @@ function template_preprocess_field_multiple_value_form(&$variables) {
       array(
         'data' => array(
           '#prefix' => '<h4' . $header_attributes . '>',
-          'title' => array(
-            '#markup' => $element['#title'],
-          ),
+          '#markup' => $element['#title'],
           '#suffix' => '</h4>',
         ),
         'colspan' => 2,