Issue #2414721 by jesperjb, plach: EntityAdapter should be instantiated per language

core/lib/Drupal/Core/Entity/ContentEntityBase.php

@@ -650,9 +650,9 @@ protected function initializeTranslation($langcode) {
     $translation->translations = &$this->translations;
     $translation->enforceIsNew = &$this->enforceIsNew;
     $translation->translationInitialize = FALSE;
-    // The label is the only entity key that can change based on the language,
-    // so unset that in case it is currently set.
+    // Reset language-dependent properties.
     unset($translation->entityKeys['label']);
+    $translation->typedData = NULL;
 
     return $translation;
   }

core/modules/system/src/Tests/Entity/EntityTranslationTest.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Entity;
 
+use Drupal\Component\Utility\String;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\entity_test\Entity\EntityTestMulRev;
 use Drupal\language\Entity\ConfigurableLanguage;
@@ -665,4 +666,28 @@ protected function doTestLanguageChange($entity_type) {
     }
   }
 
+  /**
+   * Tests how entity adapters work with translations.
+   */
+  function testEntityAdapter() {
+    $entity_type = 'entity_test';
+    $default_langcode = 'en';
+    $values[$default_langcode] = array('name' => $this->randomString());
+    $controller = $this->entityManager->getStorage($entity_type);
+    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
+    $entity = $controller->create($values[$default_langcode]);
+
+    foreach ($this->langcodes as $langcode) {
+      $values[$langcode] = array('name' => $this->randomString());
+      $entity->addTranslation($langcode, $values[$langcode]);
+    }
+
+    $langcodes = array_merge(array($default_langcode), $this->langcodes);
+    foreach ($langcodes as $langcode) {
+      $adapter = $entity->getTranslation($langcode)->getTypedData();
+      $name = $adapter->get('name')->value;
+      $this->assertEqual($name, $values[$langcode]['name'], String::format('Name correctly retrieved from "@langcode" adapter', array('@langcode' => $langcode)));
+    }
+  }
+
 }