Issue #2683763 by amateescu: Referenceable bundles should be sorted by Label,...

Issue #2683763 by amateescu: Referenceable bundles should be sorted by Label, not by their machine name

core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php

@@ -130,6 +130,7 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
       foreach ($bundles as $bundle_name => $bundle_info) {
         $bundle_options[$bundle_name] = $bundle_info['label'];
       }
+      natsort($bundle_options);
 
       $form['target_bundles'] = array(
         '#type' => 'checkboxes',