diff --git a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
index 755a1c3..ea476e4 100644
--- a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
+++ b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
@@ -145,10 +145,22 @@ public function testBlocks() {
       // Exit edit mode.
       $this->toggleEditingMode();
     }
+  }
+
+  /**
+   * Tests that contextual links in custom blocks are changed.
+   *
+   * "Quick edit" is quickedit.module link.
+   * "Quick edit settings" is outside_in.module link.
+   */
+  public function testCustomBlockLinks() {
+    $this->drupalGet('user');
+    // Wait for contextual links ajax requests to finish.
+    // @todo Remove if drupalGet() includes this wait
+    //   https://www.drupal.org/node/2830485
+    $this->assertSession()->assertWaitOnAjaxRequest();
 
-    // Check custom block labels.
-    // "Quick edit" is quickedit.module link.
-    // "Quick edit settings" is outside_in.module link.
+    $page = $this->getSession()->getPage();
     $links = $page->findAll('css', "#block-custom .contextual-links li a");
     $link_labels = [];
     /** @var \Behat\Mink\Element\NodeElement $link */