Addressed feedback

core/modules/node/tests/src/Functional/NodeAdminTest.php

@@ -236,7 +236,7 @@ public function testContentAdminPages() {
   }
 
   /**
-   * Tests content admin page multilingual.
+   * Tests content admin page for multilingual site.
    */
   public function testContentAdminPageMultilingual() {
     $this->drupalLogin($this->adminUser);
@@ -244,7 +244,7 @@ public function testContentAdminPageMultilingual() {
     \Drupal::service('module_installer')->install(['language']);
     ConfigurableLanguage::create([
       'id' => 'es',
-      'label' => 'Spain',
+      'label' => 'Spainish',
     ])->save();
 
     $this->drupalCreateNode(['type' => 'page', 'title' => 'English title'])

core/modules/views/src/Plugin/views/filter/LanguageFilter.php

@@ -74,7 +74,7 @@ public function getValueOptions() {
   public function query() {
     // Don't filter by language in case the site is not multilingual, because
     // there is no point in doing so.
-    if (!$this->languageManager->isMultilingual() || !$this->access($this->view->getUser())) {
+    if (!$this->languageManager->isMultilingual()) {
       return;
     }
 
@@ -85,8 +85,12 @@ public function query() {
    * {@inheritdoc}
    */
   public function access(AccountInterface $account) {
-    // Check if the user has access to the language filter.
-    return $this->languageManager->isMultilingual() && parent::access($account);
+    if (!parent::access($account)) {
+      return FALSE;
+    }
+    // The user will have access to the language filter only if the site is
+    // multilingual.
+    return $this->languageManager->isMultilingual();
   }
 
 }