Issue #2046541 by e0ipso: Fixed Unable to activate content translation in the...

Issue #2046541 by e0ipso: Fixed Unable to activate content translation in the content type edit form.

core/modules/content_translation/content_translation.module

@@ -934,7 +934,7 @@ function content_translation_language_configuration_element_process(array $eleme
       '#prefix' => '<label>' . t('Translation') . '</label>',
     );
 
-    $form['#submit'][] = 'content_translation_language_configuration_element_submit';
+    $form['actions']['submit']['#submit'][] = 'content_translation_language_configuration_element_submit';
   }
   return $element;
 }

core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationSettingsTest.php

@@ -101,6 +101,18 @@ function testSettingsUI() {
     $this->drupalGet('admin/structure/types/manage/article');
     $this->assertField('content_translation');
     $this->assertFieldChecked('edit-content-translation');
+
+    // Verify that translation may be enabled for the article content type.
+    $edit = array(
+      'language_configuration[content_translation]' => TRUE,
+    );
+    // Make sure the checkbox is available and not checked by default.
+    $this->drupalGet('admin/structure/types/manage/article');
+    $this->assertField('language_configuration[content_translation]');
+    $this->assertNoFieldChecked('edit-language-configuration-content-translation');
+    $this->drupalPost('admin/structure/types/manage/article', $edit, t('Save content type'));
+    $this->drupalGet('admin/structure/types/manage/article');
+    $this->assertFieldChecked('edit-language-configuration-content-translation');
   }
 
   /**