diff --git a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
index b2be1c0..86bc740 100644
--- a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
@@ -1257,7 +1257,9 @@ protected function saveToDedicatedTables(ContentEntityInterface $entity, $update
           foreach ($storage_definition->getColumns() as $column => $attributes) {
             $column_name = $table_mapping->getFieldColumnName($storage_definition, $column);
             // Serialize the value if specified in the column schema.
-            $record[$column_name] = !empty($attributes['serialize']) ? serialize($item->$column) : $item->$column;
+            $value = drupal_schema_get_field_value($attributes, $item->$column);
+            $record[$column_name] = !empty($attributes['serialize'])
+              ? serialize($value) : $value;
           }
           $query->values($record);
           if ($this->entityType->isRevisionable()) {
diff --git a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
index 1f37f0d..c571fc2 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
@@ -19,7 +19,12 @@ class BooleanFieldTest extends WebTestBase {
    *
    * @var array
    */
-  public static $modules = array('entity_test', 'field_ui', 'options');
+  public static $modules = [
+    'entity_test',
+    'field_ui',
+    'options',
+    'field_test_boolean_access_denied',
+  ];
 
   /**
    * A field to use in this test class.
@@ -177,4 +182,66 @@ function testBooleanField() {
     $this->assertFieldById('edit-settings-off-label', $off);
   }
 
+  /**
+   * Test field access.
+   */
+  public function testFormAccess() {
+    $on = 'boolean_on';
+    $off = 'boolean_off';
+    $label = 'boolean_label';
+    $field_name = 'boolean_name';
+    $this->fieldStorage = FieldStorageConfig::create([
+      'field_name' => $field_name,
+      'entity_type' => 'entity_test',
+      'type' => 'boolean',
+    ]);
+    $this->fieldStorage->save();
+    $this->field = FieldConfig::create([
+      'field_name' => $field_name,
+      'entity_type' => 'entity_test',
+      'bundle' => 'entity_test',
+      'label' => $label,
+      'settings' => [
+        'on_label' => $on,
+        'off_label' => $off,
+      ],
+    ]);
+    $this->field->save();
+
+    // Create a form display for the default form mode.
+    entity_get_form_display('entity_test', 'entity_test', 'default')
+      ->setComponent($field_name, [
+        'type' => 'boolean_checkbox',
+      ])
+      ->save();
+
+    // Create a display for the full view mode.
+    entity_get_display('entity_test', 'entity_test', 'full')
+      ->setComponent($field_name, [
+        'type' => 'boolean',
+      ])
+      ->save();
+
+    // Display creation form.
+    $this->drupalGet('entity_test/add');
+    $this->assertFieldByName("{$field_name}[value]");
+
+    // Should be posted OK.
+    $this->drupalPostForm(NULL, [], t('Save'));
+    preg_match('|entity_test/manage/(\d+)|', $this->url, $match);
+    $id = $match[1];
+    $this->assertText(t('entity_test @id has been created.', ['@id' => $id]));
+
+    // Tell the test module to disable access to the field.
+    \Drupal::state()->set('field.test_boolean_field_access_field', $field_name);
+    $this->drupalGet('entity_test/add');
+    // Field should not be there anymore.
+    $this->assertNoFieldByName("{$field_name}[value]");
+    // Should still be able to post the form.
+    $this->drupalPostForm(NULL, [], t('Save'));
+    preg_match('|entity_test/manage/(\d+)|', $this->url, $match);
+    $id = $match[1];
+    $this->assertText(t('entity_test @id has been created.', ['@id' => $id]));
+  }
+
 }
diff --git a/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.info.yml b/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.info.yml
new file mode 100644
index 0000000..d1b578f
--- /dev/null
+++ b/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.info.yml
@@ -0,0 +1,8 @@
+name: 'Boolean field Test'
+type: module
+description: 'Support module for the field and entity display tests.'
+core: 8.x
+package: Testing
+version: VERSION
+dependencies:
+  - field
diff --git a/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.module b/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.module
new file mode 100644
index 0000000..9628d43
--- /dev/null
+++ b/core/modules/field/tests/modules/field_test_boolean_access_denied/field_test_boolean_access_denied.module
@@ -0,0 +1,10 @@
+<?php
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Field\FieldDefinitionInterface;
+
+/**
+ * Implements hook_entity_field_access().
+ */
+function field_test_boolean_access_denied_entity_field_access($operation, FieldDefinitionInterface $field_definition, \Drupal\Core\Session\AccountInterface $account, \Drupal\Core\Field\FieldItemListInterface $items = NULL) {
+  return AccessResult::forbiddenIf($field_definition->getName() === \Drupal::state()->get('field.test_boolean_field_access_field'));
+}