- Patch #45845 by Jaza: Weight elements need default value of zero.

includes/form.inc

@@ -691,6 +691,18 @@ function checkboxes_value(&$form) {
   $form['#value'] = $value;
 }
 
+/**
+ * If no default value is set for weight select boxes, use 0.
+ */
+function weight_value(&$form) {
+  if (isset($form['#default_value'])) {
+    $form['#value'] = $form['#default_value'];
+  }
+  else {
+    $form['#value'] = 0;
+  }
+}
+
 /**
  * Roll out a single radios element to a list of radios,
  * using the options array as index.