diff --git a/core/modules/node/src/Tests/PagePreviewTest.php b/core/modules/node/src/Tests/PagePreviewTest.php
index 14e21fa..206ef82 100644
--- a/core/modules/node/src/Tests/PagePreviewTest.php
+++ b/core/modules/node/src/Tests/PagePreviewTest.php
@@ -282,6 +282,20 @@ function testPagePreview() {
     $this->drupalPostForm('node/add/page', array($title_key => 'Preview'), t('Preview'));
     $this->clickLink(t('Back to content editing'));
     $this->assertRaw('edit-submit');
+
+    // Assert multiple items can be added and are not lost when previewing.
+    $test_image_1 = current($this->drupalGetTestFiles('image', 39325));
+    $edit_image_1['files[field_image_0][]'] = drupal_realpath($test_image_1->uri);
+    $test_image_2 = current($this->drupalGetTestFiles('image', 39325));
+    $edit_image_2['files[field_image_1][]'] = drupal_realpath($test_image_2->uri);
+    $edit['field_image[0][alt]'] = 'Alt 1';
+
+    $this->drupalPostForm('node/add/page', $edit_image_1, t('Upload'));
+    $this->drupalPostForm(NULL, $edit, t('Preview'));
+    $this->clickLink(t('Back to content editing'));
+    $this->assertFieldByName('files[field_image_1][]');
+    $this->drupalPostForm(NULL, $edit_image_2, t('Upload'));
+    $this->assertNoFieldByName('files[field_image_1][]');
   }
 
   /**