diff -u b/core/modules/shortcut/lib/Drupal/shortcut/Entity/ShortcutSet.php b/core/modules/shortcut/lib/Drupal/shortcut/Entity/ShortcutSet.php
--- b/core/modules/shortcut/lib/Drupal/shortcut/Entity/ShortcutSet.php
+++ b/core/modules/shortcut/lib/Drupal/shortcut/Entity/ShortcutSet.php
@@ -46,22 +46,25 @@
 class ShortcutSet extends ConfigEntityBase implements ShortcutSetInterface {
 
   /**
-   * @TODO this is still public because ConfigEntityBase::getExportProperties()
-   * uses reflection to pick out the public properties to export.
+   * The unique ID of the ShortcutSet.
+   *
+   * @var string
    */
-  public $id;
+  public $id = NULL;
 
   /**
-   * @TODO this is still public because ConfigEntityBase::getExportProperties()
-   * uses reflection to pick out the public properties to export.
+   * The label for this ShortcutSet.
+   *
+   * @var string
    */
-  public $label;
+  protected $label;
 
   /**
-   * @TODO this is still public because ConfigEntityBase::getExportProperties()
-   * uses reflection to pick out the public properties to export.
+   * A list of MenuLink uuids which make up this ShortcutSet.
+   *
+   * @var array
    */
-  public $links = array();
+  protected $links = array();
 
    /**
     * {@inheritdoc}
@@ -162,2 +165,21 @@
   }
+
+  /**
+   * Overrides \Drupal\Core\Config\Entity\ConfigEntityBase::getExportProperties();
+   */
+  public function getExportProperties() {
+    $names = array(
+      'status',
+      'label',
+      'links',
+      'id',
+      'uuid',
+      'langcode',
+    );
+    $properties = array();
+    foreach ($names as $name) {
+      $properties[$name] = $this->get($name);
+    }
+    return $properties;
+  }
 }