Issue #2203115 by TravisCarden: No page title on admin/modules/uninstall.

core/modules/system/lib/Drupal/system/Tests/Module/UninstallTest.php

@@ -40,4 +40,14 @@ function testUserPermsUninstalled() {
     // Are the perms defined by module_test removed?
     $this->assertFalse(user_roles(FALSE, 'module_test perm'), 'Permissions were all removed.');
   }
+
+  /**
+   * Tests the Uninstall page.
+   */
+  function testUninstallPage() {
+    $account = $this->drupalCreateUser(array('administer modules'));
+    $this->drupalLogin($account);
+    $this->drupalGet('admin/modules/uninstall');
+    $this->assertTitle(t('Uninstall') . ' | Drupal');
+  }
 }

core/modules/system/system.routing.yml

@@ -351,6 +351,7 @@ system.modules_uninstall:
   path: '/admin/modules/uninstall'
   defaults:
     _form: 'Drupal\system\Form\ModulesUninstallForm'
+    _title: 'Uninstall'
   requirements:
     _permission: 'administer modules'