only in patch2:
unchanged:
--- a/core/tests/Drupal/KernelTests/Core/Entity/RouteProviderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/RouteProviderTest.php
@@ -84,13 +84,13 @@ public function testHtmlRoutes() {
     $entity->save();
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl()->toString()));
-    $this->assertTitle('Test title | ');
+    $this->assertSession()->titleEquals('Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('edit-form')->toString()));
-    $this->assertTitle('Edit Test title | ');
+    $this->assertSession()->titleEquals('Edit Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('delete-form')->toString()));
-    $this->assertTitle('Are you sure you want to delete the test entity - data table Test title? | ');
+    $this->assertSession()->titleEquals('Are you sure you want to delete the test entity - data table Test title? | ');
   }
 
   /**
@@ -127,13 +127,13 @@ public function testAdminHtmlRoutes() {
     $entity->save();
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl()->toString()));
-    $this->assertTitle('Test title | ');
+    $this->assertSession()->titleEquals('Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('edit-form')->toString()));
-    $this->assertTitle('Edit Test title | ');
+    $this->assertSession()->titleEquals('Edit Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('delete-form')->toString()));
-    $this->assertTitle('Are you sure you want to delete the test entity - admin routes Test title? | ');
+    $this->assertSession()->titleEquals('Are you sure you want to delete the test entity - admin routes Test title? | ');
   }
 
 }