diff --git a/core/lib/Drupal/Core/Config/Schema/core.data_types.schema.yml b/core/lib/Drupal/Core/Config/Schema/core.data_types.schema.yml
index a0aeff3..49138f5 100644
--- a/core/lib/Drupal/Core/Config/Schema/core.data_types.schema.yml
+++ b/core/lib/Drupal/Core/Config/Schema/core.data_types.schema.yml
@@ -167,6 +167,6 @@ text_with_format:
     value:
       type: text
       label: 'Content'
-    fomrat:
+    format:
       type: string
       label: 'Text format'
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/Form/ConfigTranslationFormBase.php b/core/modules/config_translation/lib/Drupal/config_translation/Form/ConfigTranslationFormBase.php
index c5dae18..5fca7b1 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/Form/ConfigTranslationFormBase.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/Form/ConfigTranslationFormBase.php
@@ -230,7 +230,7 @@ public function submitForm(array &$form, array &$form_state) {
       $config_translation = $this->languageManager->getLanguageConfigOverride($this->language->id, $name);
       $locations = $this->localeStorage->getLocations(array('type' => 'configuration', 'name' => $name));
 
-      $this->setConfig($this->language, $base_config, $config_translation, $form_values[$name], !empty($locations));
+      $this->setConfig($this->language, $base_config, $config_translation, $form_values[$name], $this->typedConfigManager->get($name), !empty($locations));
 
       // If no overrides, delete language specific configuration file.
       $saved_config = $config_translation->get();
@@ -363,6 +363,8 @@ protected function buildConfigForm(Element $schema, $config_data, $base_config_d
    *        );
    *   Either format is used, the nested arrays are just containers and not
    *   needed for saving the data.
+   * @param \Drupal\Core\Config\Schema\Element $schema
+   *   Schema definition of configuration.
    * @param bool $shipped_config
    *   (optional) Flag to specify whether the configuration had a shipped
    *   version and therefore should also be stored in the locale database.
@@ -370,14 +372,13 @@ protected function buildConfigForm(Element $schema, $config_data, $base_config_d
    * @return array
    *   Translation configuration override data.
    */
-  protected function setConfig(Language $language, Config $base_config, Config $config_translation, array $config_values, $shipped_config = FALSE) {
+  protected function setConfig(Language $language, Config $base_config, Config $config_translation, array $config_values, Element $schema, $shipped_config = FALSE) {
     foreach ($config_values as $key => $value) {
       if (is_array($value) && !isset($value['translation'])) {
         // Traverse into this level in the configuration.
-        $this->setConfig($language, $base_config, $config_translation, $value, $shipped_config);
+        $this->setConfig($language, $base_config, $config_translation, $value, $schema, $shipped_config);
       }
       else {
-
         // If the configuration file being translated was originally shipped, we
         // should update the locale translation storage. The string should
         // already be there, but we make sure to check.
@@ -392,10 +393,43 @@ protected function setConfig(Language $language, Config $base_config, Config $co
           // If we got a translation, take that, otherwise create a new one.
           $translation = reset($translations) ?: $this->localeStorage->createTranslation($conditions);
 
+          // Some schema types provide a form_element_class which is responsible
+          // for providing us with a translation string. We iterate through the
+          // $key string to check if we have a schema definition for that.
+          $types = explode(".", $key);
+          krsort($types);
+          foreach ($types as $type) {
+            // If there is a schema definition, run the
+            // hook_config_translation_type_info_alter.
+            if (isset($schema[$type])) {
+              $element = $schema[$type];
+              $definition = $element->getDataDefinition();
+
+              // Invoke hook_config_translation_type_info_alter() implementations to
+              // alter the configuration types.
+              $definitions = array(
+                $definition['type'] => &$definition,
+              );
+              $this->moduleHandler->alter('config_translation_type_info', $definitions);
+              break;
+            }
+          }
+
+          // If form_element_class is set, create a new object of this class and
+          // let it return the string of the translation.
+          if (isset($definition['form_element_class'])) {
+            /** @var \Drupal\config_translation\FormElement\ElementInterface $form_element */
+            $form_element = new $definition['form_element_class']();
+
+            $translation_string = $form_element->getTranslationString($value['translation']);
+          } else {
+            $translation_string = $value['translation'];
+          }
+
           // If we have a new translation or different from what is stored in
           // locale before, save this as an updated customize translation.
-          if ($translation->isNew() || $translation->getString() != $value['translation']) {
-            $translation->setString($value['translation'])
+          if ($translation->isNew() || $translation->getString() != $translation_string) {
+            $translation->setString($translation_string)
               ->setCustomized()
               ->save();
           }
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/Element.php b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/Element.php
index 8d8f0cc..ce33fcb 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/Element.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/Element.php
@@ -50,4 +50,11 @@ public function getRenderedSource($base_config_data, $key, Language $source_lang
     return $base_config_data[$key] ? ('<span lang="' . $source_language->id . '">' . nl2br($base_config_data[$key] . '</span>')) : t('(Empty)');
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getTranslationString($value) {
+    return $value;
+  }
+
 }
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/ElementInterface.php b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/ElementInterface.php
index 96b84be..3713024 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/ElementInterface.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/ElementInterface.php
@@ -47,4 +47,16 @@ public function getFormElement(array $definition, Language $language, $value);
    */
   public function getRenderedSource($base_config_data, $key, Language $source_language, Language $language);
 
+
+  /**
+   * Returns the translation to be used in string storage.
+   *
+   * @param mixed $value
+   *   The value of the translation element.
+   *
+   * @return string
+   *   String of translation.
+   */
+  public function getTranslationString($value);
+
 }
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/TextFormat.php b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/TextFormat.php
index a3b7657..522dbda 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/FormElement/TextFormat.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/FormElement/TextFormat.php
@@ -36,4 +36,11 @@ public function getRenderedSource($base_config_data, $key, Language $source_lang
     return $value ? '<span lang="' . $source_language->id . '">' . $value . '</span>' : t('(Empty)');
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getTranslationString($value) {
+    return $value['value'];
+  }
+
 }
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationFormTest.php b/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationFormTest.php
index c5bce3f..591c796 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationFormTest.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationFormTest.php
@@ -20,7 +20,7 @@ class ConfigTranslationFormTest extends WebTestBase {
    *
    * @var array
    */
-  public static $modules = array('config_translation', 'config_translation_test');
+  public static $modules = array('config_translation', 'config_translation_test', 'editor');
 
   /**
    * The plugin ID of the mapper to test.
diff --git a/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationUiTest.php b/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationUiTest.php
index 788bf76..d32e894 100644
--- a/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationUiTest.php
+++ b/core/modules/config_translation/lib/Drupal/config_translation/Tests/ConfigTranslationUiTest.php
@@ -704,7 +704,6 @@ public function testTextFormatTranslation() {
     $translation_page_url = "$translation_base_url/fr/add";
     $this->assertLinkByHref($translation_page_url);
 
-    // Make sure original text is present on this page.
     $this->drupalGet($translation_page_url);
 
     // Update translatable fields.
@@ -716,7 +715,7 @@ public function testTextFormatTranslation() {
     $this->drupalPostForm($translation_page_url, $edit, t('Save translation'));
 
     // Get translation and check we've got the right value.
-    $config_parsed = $file_storage->read('locale.config.fr.config_translation_test.content');
+    $config_parsed = $file_storage->read('language.config.fr.config_translation_test.content');
     $expected = array(
       'content' => array(
         'value' => '<strong>Hello World</strong> - FR',
diff --git a/core/modules/config_translation/tests/modules/config_translation_test/config/schema/config_translation_test.schema.yml b/core/modules/config_translation/tests/modules/config_translation_test/config/schema/config_translation_test.schema.yml
index 369db53..cea0fa9 100644
--- a/core/modules/config_translation/tests/modules/config_translation_test/config/schema/config_translation_test.schema.yml
+++ b/core/modules/config_translation/tests/modules/config_translation_test/config/schema/config_translation_test.schema.yml
@@ -4,6 +4,15 @@ config_translation_test.content:
   type: mapping
   label: 'Content'
   mapping:
+    id:
+      type: string
+      label: 'Category identifier'
+    label:
+      type: label
+      label: 'Label'
+    langcode:
+      type: string
+      label: 'Default language'
     content:
       type: text_with_format
-      label: 'Test element: Text with format'
+      label: 'Content'
\ No newline at end of file