diff --git a/core/tests/Drupal/FunctionalJavascriptTests/Core/Field/TimestampFormatterWithTimeagoTest.php b/core/tests/Drupal/FunctionalJavascriptTests/Core/Field/TimestampFormatterWithTimeagoTest.php
new file mode 100644
index 0000000000..93acfd8d54
--- /dev/null
+++ b/core/tests/Drupal/FunctionalJavascriptTests/Core/Field/TimestampFormatterWithTimeagoTest.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace Drupal\FunctionalJavascriptTests\Core\Field;
+
+use Drupal\Component\Utility\Timer;
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\Core\Entity\Entity\EntityViewDisplay;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\FunctionalJavascriptTests\DrupalSelenium2Driver;
+use Drupal\FunctionalJavascriptTests\JavascriptTestBase;
+
+/**
+ * Tests the 'timestamp' formatter when is used with 'time ago' setting.
+ *
+ * @group Field
+ */
+class TimestampFormatterWithTimeagoTest extends JavascriptTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $minkDefaultDriverClass = DrupalSelenium2Driver::class;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = ['entity_test', 'field'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    FieldStorageConfig::create([
+      'entity_type' => 'entity_test',
+      'field_name' => 'time_field',
+      'type' => 'timestamp',
+    ])->save();
+    FieldConfig::create([
+      'entity_type' => 'entity_test',
+      'bundle' => 'entity_test',
+      'field_name' => 'time_field',
+      'label' => $this->randomString(),
+    ])->save();
+    $display = EntityViewDisplay::create([
+      'targetEntityType' => 'entity_test',
+      'bundle' => 'entity_test',
+      'mode' => 'default',
+    ]);
+    $display->setComponent('time_field', [
+        'type' => 'timestamp',
+        'settings' => [
+          'timeago' => [
+            'enabled' => TRUE,
+            'future_format' => '@interval hence',
+            'past_format' => '@interval ago',
+            'granularity' => 2,
+            'refresh' => 1,
+          ],
+        ],
+      ])->setStatus(TRUE)->save();
+
+    $account = $this->createUser([
+      'view test entity',
+      'administer entity_test content',
+    ]);
+    $this->drupalLogin($account);
+  }
+
+  /**
+   * Tests the 'timestamp' formatter when is used with 'time ago' setting.
+   */
+  public function testTimestampFormatterWithTimeago() {
+    $entity = EntityTest::create([
+      'type' => 'entity_test',
+      'name' => $this->randomString(),
+      'time_field' => $this->container->get('datetime.time')->getRequestTime(),
+    ]);
+    $entity->save();
+
+    $this->drupalGet($entity->toUrl());
+
+    $this->assertJsCondition("jQuery('time:contains(\"5 seconds\")').length > 0");
+  }
+
+}