diff -u b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
--- b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
+++ b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
@@ -87,15 +87,15 @@
 
     $this->drupalLogin($access_user);
 
-    // Create some nodes.
-    $private_node = $this->drupalCreateNode([
-      'title' => $this->t('Private node test'),
-      'private' => TRUE,
-    ]);
-    $public_node = $this->drupalCreateNode([
-      'title' => $this->t('Public node test'),
-      'private' => FALSE,
-    ]);
+   // Create some nodes.
+   $private_node = $this->drupalCreateNode([
+    'title' => 'Private node test',
+    'private' => TRUE,
+  ]);
+  $public_node = $this->drupalCreateNode([
+    'title' => 'Public node test',
+    'private' => FALSE,
+  ]);
 
     // User with access should see both nodes created.
     $this->drupalGet('activity');
diff -u b/core/modules/tracker/tests/src/Functional/TrackerTest.php b/core/modules/tracker/tests/src/Functional/TrackerTest.php
--- b/core/modules/tracker/tests/src/Functional/TrackerTest.php
+++ b/core/modules/tracker/tests/src/Functional/TrackerTest.php
@@ -155,8 +155,8 @@
     ]);
 
     $this->drupalGet('user/' . $this->user->id() . '/activity');
-    $this->assertNoText($this->nodes['unpublished']->label(), "Unpublished nodes do not show up in the user's tracker listing.");
-    $this->assertText($this->nodes['my_published']->label(), "Published nodes show up in the user's tracker listing.");
+    $this->assertSession()->pageTextNotContains($this->nodes['unpublished']->label(), "Unpublished nodes do not show up in the user's tracker listing.");
+    $this->assertSession()->pageTextContains($this->nodes['my_published']->label(), "Published nodes show up in the user's tracker listing.");
 
     // Assert cache contexts.
     $this->assertCacheContexts([
@@ -349,22 +349,26 @@
   /**
    * Passes if the appropriate history metadata exists.
    *
-   * Verify the data-history-node-id, data-history-node-timestamp attribute,
-   * which is used by the drupal.tracker-history library to add the appropriate
-   * "new" and "updated" indicators, as well as the "x new" replies link to the
-   * tracker. We do this in JavaScript to prevent breaking the render cache.
+   * Verify the data-history-node-id, data-history-node-timestamp and
+   * data-history-node-last-comment-timestamp attributes, which are used by the
+   * drupal.tracker-history library to add the appropriate "new" and "updated"
+   * indicators, as well as the "x new" replies link to the tracker.
+   * We do this in JavaScript to prevent breaking the render cache.
    *
    * @param int $node_id
-   *   A node ID, that must exist as a data-history-node-id attribute.
+   *   A node ID, that must exist as a data-history-node-id attribute
    * @param int $node_timestamp
    *   A node timestamp, that must exist as a data-history-node-timestamp
    *   attribute.
+   * @param int $node_last_comment_timestamp
+   *   A node's last comment timestamp, that must exist as a
+   *   data-history-node-last-comment-timestamp attribute.
    * @param bool $library_is_present
    *   Whether the drupal.tracker-history library should be present or not.
    *
    * @internal
    */
-  public function assertHistoryMetadata($node_id, $node_timestamp, $library_is_present = TRUE) {
+  public function assertHistoryMetadata(int $node_id, int $node_timestamp, int $node_last_comment_timestamp, bool $library_is_present = TRUE): void {
     $settings = $this->getDrupalSettings();
     $this->assertSame($library_is_present, isset($settings['ajaxPageState']) && in_array('tracker/history', explode(',', $settings['ajaxPageState']['libraries'])), 'drupal.tracker-history library is present.');
     $this->assertCount(1, $this->xpath('//table/tbody/tr/td[@data-history-node-id="' . $node_id . '" and @data-history-node-timestamp="' . $node_timestamp . '"]'), 'Tracker table cell contains the data-history-node-id and data-history-node-timestamp attributes for the node.');