diff --git a/core/modules/rdf/lib/Drupal/rdf/Tests/Field/TaxonomyTermReferenceRdfaTest.php b/core/modules/rdf/lib/Drupal/rdf/Tests/Field/TaxonomyTermReferenceRdfaTest.php
index f04d0ab..9ac3073 100644
--- a/core/modules/rdf/lib/Drupal/rdf/Tests/Field/TaxonomyTermReferenceRdfaTest.php
+++ b/core/modules/rdf/lib/Drupal/rdf/Tests/Field/TaxonomyTermReferenceRdfaTest.php
@@ -84,7 +84,6 @@ public function setUp() {
     $mapping = rdf_get_mapping('entity_test', 'entity_test');
     $mapping->setFieldMapping($this->fieldName, array(
       'properties' => array('schema:about'),
-      'mapping_type' => 'rel',
     ))->save();
 
     // Set up test values.
@@ -95,10 +94,18 @@ public function setUp() {
   }
 
   /**
+   * Tests the plain formatter.
+   */
+  public function testPlainFormatter() {
+    $term_uri = $this->getAbsoluteUri($this->term);
+    $this->_testFormatter('taxonomy_term_reference_plain', 'http://schema.org/about', $term_uri, 'uri');
+  }
+
+  /**
    * Test the link formatter.
    */
   public function testLinkFormatter() {
-    $term_uri = 'http://ex.com/taxonomy/term/1';
+    $term_uri = $this->getAbsoluteUri($this->term);
     $this->_testFormatter('taxonomy_term_reference_link', 'http://schema.org/about', $term_uri, 'uri');
   }
 }
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/LinkFormatter.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/LinkFormatter.php
index b44002e..51ebdd7 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/LinkFormatter.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/LinkFormatter.php
@@ -50,6 +50,13 @@ public function viewElements(EntityInterface $entity, $langcode, array $items) {
           '#href' => $uri['path'],
           '#options' => $uri['options'],
         );
+
+        if (!empty($item['html_data_attributes'])) {
+          if (!isset($elements[$delta]['#options']['attributes'])) {
+            $elements[$delta]['#options']['attributes'] = array();
+          }
+          $elements[$delta]['#options']['attributes'] += $item['html_data_attributes'];
+        }
       }
     }
 
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/TaxonomyFormatterBase.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/TaxonomyFormatterBase.php
index 90f76ad..00e5cc3 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/TaxonomyFormatterBase.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/TaxonomyFormatterBase.php
@@ -24,6 +24,8 @@
    * unsets values for invalid terms that do not exist.
    */
   public function prepareView(array $entities, $langcode, array &$items) {
+    parent::prepareView($entities, $langcode, $items);
+
     $tids = array();
 
     // Collect every possible term attached to any of the fieldable entities.