diff -u b/src/AliasUniquifier.php b/src/AliasUniquifier.php
--- b/src/AliasUniquifier.php
+++ b/src/AliasUniquifier.php
@@ -64,7 +64,7 @@
    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
    *   The module handler.
    * @param \Drupal\Core\Routing\RouteProviderInterface $route_provider
-   *   The url matcher service.
+   *   The route provider service.
    */
   public function __construct(ConfigFactoryInterface $config_factory, AliasStorageHelperInterface $alias_storage_helper, ModuleHandlerInterface $module_handler, RouteProviderInterface $route_provider, AliasManagerInterface $alias_manager) {
     $this->configFactory = $config_factory;
@@ -107,7 +107,6 @@
       if ($existing_source != $alias) {
         // If it is an alias for the provided source, it is allowed to keep using
         // it. If not, then it is reserved.
-        $this->lastRouteName = NULL;
         return $existing_source != $source;
       }
 
only in patch2:
unchanged:
--- a/src/Tests/PathautoNodeWebTest.php
+++ b/src/Tests/PathautoNodeWebTest.php
@@ -6,6 +6,7 @@
  */
 
 namespace Drupal\pathauto\Tests;
+use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\pathauto\Entity\PathautoPattern;
 use Drupal\node\Entity\Node;
 use Drupal\pathauto\PathautoState;
@@ -25,7 +26,7 @@ class PathautoNodeWebTest extends WebTestBase {
    *
    * @var array
    */
-  public static $modules = array('node', 'pathauto', 'views', 'taxonomy', 'pathauto_views_test');
+  public static $modules = array('node', 'locale', 'pathauto', 'views', 'taxonomy', 'pathauto_views_test');
 
   /**
    * Admin user.
@@ -146,6 +147,38 @@ class PathautoNodeWebTest extends WebTestBase {
   }
 
   /**
+   * Tests that nodes with the same title but different languages are properly
+   * handled.
+   */
+  public function testNodeDifferentLanguages() {
+    $this->drupalLogin($this->rootUser);
+
+    // Create a title-based node pattern.
+    $this->createPattern('node', '/prefix/[node:title]', -1);
+
+    // Add predefined French language.
+    ConfigurableLanguage::createFromLangcode('fr')->save();
+
+    // Create two English articles with the same title.
+    $edit = [
+      'title' => 'Sample article',
+      'type' => 'article',
+      'langcode' => 'en',
+    ];
+    $node1 = $this->drupalCreateNode($edit);
+    $this->assertEntityAlias($node1, '/prefix/sample-article', 'en');
+
+    $node2 = $this->drupalCreateNode($edit);
+    $this->assertEntityAlias($node2, '/prefix/sample-article-0', 'en');
+
+    // Now, create a French article with the same title, and verify that it gets
+    // the basic alias with the correct langcode.
+    $edit['langcode'] = 'fr';
+    $node3 = $this->drupalCreateNode($edit);
+    $this->assertEntityAlias($node3, '/prefix/sample-article', 'fr');
+  }
+
+  /**
    * Test node operations.
    */
   function testNodeOperations() {
@@ -285,28 +318,4 @@ class PathautoNodeWebTest extends WebTestBase {
     $this->assertResponse(200);
   }
 
-  /**
-   * Tests that patterns can coexist with routes with arguments.
-   *
-   * A common case is to have a view with a term name as a contextual filter,
-   * and a pattern that matches the view's path.
-   */
-  public function testPatternMatchingDynamicRoute() {
-    $this->drupalLogin($this->rootUser);
-
-    // Create a pattern for nodes that matches with a view path defined at
-    // pathauto_views_test module.
-    $this->createPattern('node', '/articles/[node:title]', -1);
-
-    // Create an article.
-    $edit = array(
-      'title[0][value]' => 'Sample article',
-    );
-    $this->drupalPostForm('node/add/article', $edit, t('Save and publish'));
-
-    // Check that the alias was not created and an alert was shown.
-    $this->assertText('collides with the route with identifier');
-    $this->assertNoAliasExists(array('alias' => '/articles/sample-article'));
-  }
-
 }