2 files changed, 14 insertions, 1 deletions
diff --git a/core/modules/content_translation/src/ContentTranslationHandler.php b/core/modules/content_translation/src/ContentTranslationHandler.php
index ad21415ac0a..5ce09394849 100644
--- a/core/modules/content_translation/src/ContentTranslationHandler.php
+++ b/core/modules/content_translation/src/ContentTranslationHandler.php
@@ -487,7 +487,7 @@ class ContentTranslationHandler implements ContentTranslationHandlerInterface, E
         '#default_value' => User::load($uid),
         // Validation is done by static::entityFormValidate().
         '#validate_reference' => FALSE,
-        '#maxlength' => 60,
+        '#maxlength' => 1024,
         '#description' => $this->t('Leave blank for %anonymous.', ['%anonymous' => \Drupal::config('user.settings')->get('anonymous')]),
       ];
 
diff --git a/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php b/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
index 65e4ea51654..44929204bc6 100644
--- a/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
+++ b/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
@@ -12,6 +12,7 @@ use Drupal\Core\Language\LanguageInterface;
 use Drupal\Core\Url;
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\Tests\system\Functional\Cache\AssertPageCacheContextsAndTagsTrait;
+use Drupal\user\UserInterface;
 
 /**
  * Tests the Content Translation UI.
@@ -353,6 +354,18 @@ abstract class ContentTranslationUITestBase extends ContentTranslationTestBase {
     $metadata = $this->manager->getTranslationMetadata($entity->getTranslation($langcode));
     $this->assertEquals($values[$langcode]['uid'], $metadata->getAuthor()->id(), 'Translation author correctly kept.');
     $this->assertEquals($values[$langcode]['created'], $metadata->getCreatedTime(), 'Translation date correctly kept.');
+
+    // Verify that long usernames can be saved as the translation author.
+    $user = $this->drupalCreateUser([], $this->randomMachineName(UserInterface::USERNAME_MAX_LENGTH));
+    $edit = [
+      // Format the username as it is entered in autocomplete fields.
+      'content_translation[uid]' => $user->getAccountName() . ' (' . $user->id() . ')',
+      'content_translation[created]' => $this->container->get('date.formatter')->format($values[$langcode]['created'], 'custom', 'Y-m-d H:i:s O'),
+    ];
+    $this->submitForm($edit, $this->getFormSubmitAction($entity, $langcode));
+    $reloaded_entity = $storage->load($this->entityId);
+    $metadata = $this->manager->getTranslationMetadata($reloaded_entity->getTranslation($langcode));
+    $this->assertEquals($user->id(), $metadata->getAuthor()->id(), 'Translation author correctly set.');
   }
 
   /**