commit 1c82b3ee7862350c4e3b26a65ace87d9a5be20f2
Author: Joel Pittet <joel@pittet.ca>
Date:   Thu Oct 22 16:22:07 2015 -0700

    fix

diff --git a/core/modules/field_ui/field_ui.module b/core/modules/field_ui/field_ui.module
index 9ac9d90..56375fc 100644
--- a/core/modules/field_ui/field_ui.module
+++ b/core/modules/field_ui/field_ui.module
@@ -218,14 +218,14 @@ function field_ui_entity_form_mode_delete(EntityFormModeInterface $form_mode) {
 }
 
 /**
- * Returns HTML for Field UI overview tables.
+ * Prepares variables for field UI overview table templates.
  *
- * @param $variables
+ * Default template: field-ui-table.html.twig.
+ *
+ * @param array $variables
  *   An associative array containing:
  *   - elements: An associative array containing a Form API structure to be
  *     rendered as a table.
- *
- * @ingroup themeable
  */
 function template_preprocess_field_ui_table(&$variables) {
   template_preprocess_table($variables);
diff --git a/core/modules/field_ui/src/Element/FieldUiTable.php b/core/modules/field_ui/src/Element/FieldUiTable.php
index 48ebda4..18e657f 100644
--- a/core/modules/field_ui/src/Element/FieldUiTable.php
+++ b/core/modules/field_ui/src/Element/FieldUiTable.php
@@ -26,7 +26,7 @@ public function getInfo() {
     $info['#regions'] = ['' => []];
     $info['#theme'] = 'field_ui_table';
     // Prepend FieldUiTable's prerender.
-    array_unshift($info['#pre_render'], [$this, 'tablePreRender']);
+    array_unshift($info['#pre_render'], [$this, 'tablePreRender'], [$this, 'preRenderRegionRows']);
     return $info;
   }
 
@@ -124,6 +124,18 @@ public static function tablePreRender($elements) {
       }
     }
 
+    return $elements;
+  }
+
+  /**
+   * Performs pre-render to move #regions to rows.
+   *
+   * @param array $elements
+   *
+   * @return array
+   *   The $element with prepared variables ready for field-ui-table.html.twig.
+   */
+  public static function preRenderRegionRows($elements) {
     // Determine the colspan to use for region rows, by checking the number of
     // columns in the headers.
     $columns_count = 0;
@@ -199,12 +211,11 @@ public static function tablePreRender($elements) {
   /**
    * Determines the rendering order of an array representing a tree.
    *
-   * Callback for array_reduce() within
-   * \Drupal\field_ui\Form\EntityDisplayFormBase::tablePreRender().
+   * Callback for array_reduce() within ::tablePreRender().
    *
    * @param mixed $array
-   *   Holds the return value of the previous iteration;  in the case of the
-   *   first iteration it instead holds the value of initial.
+   *   Holds the return value of the previous iteration; in the case of the
+   *   first iteration it instead holds the value of the initial array.
    * @param mixed $a
    *   Holds the value of the current iteration.
    *
diff --git a/core/modules/field_ui/src/Form/EntityDisplayFormBase.php b/core/modules/field_ui/src/Form/EntityDisplayFormBase.php
index d828093..e0b622a 100644
--- a/core/modules/field_ui/src/Form/EntityDisplayFormBase.php
+++ b/core/modules/field_ui/src/Form/EntityDisplayFormBase.php
@@ -19,6 +19,7 @@
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Render\Element;
 use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\field_ui\Element\FieldUiTable;
 use Drupal\field_ui\FieldUI;
 
 /**
@@ -673,6 +674,39 @@ public function multistepAjax($form, FormStateInterface $form_state) {
   }
 
   /**
+   * Performs pre-render tasks on field_ui_table elements.
+   *
+   * @param array $elements
+   *   A structured array containing two sub-levels of elements. Properties
+   *   used:
+   *   - #tabledrag: The value is a list of $options arrays that are passed to
+   *     drupal_attach_tabledrag(). The HTML ID of the table is added to each
+   *     $options array.
+   *
+   * @return array
+   *
+   * @see drupal_render()
+   * @see \Drupal\Core\Render\Element\Table::preRenderTable()
+   *
+   * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0.
+   */
+  public function tablePreRender($elements) {
+    return FieldUiTable::tablePreRender($elements);
+  }
+
+  /**
+   * Determines the rendering order of an array representing a tree.
+   *
+   * Callback for array_reduce() within
+   * \Drupal\field_ui\Form\EntityDisplayFormBase::tablePreRender().
+   *
+   * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0.
+   */
+  public function reduceOrder($array, $a) {
+    return FieldUiTable::reduceOrder($array, $a);
+  }
+
+  /**
    * Returns the extra fields of the entity type and bundle used by this form.
    *
    * @return array
diff --git a/core/modules/field_ui/templates/field-ui-table.html.twig b/core/modules/field_ui/templates/field-ui-table.html.twig
index 698f3f4..f7ff026 100644
--- a/core/modules/field_ui/templates/field-ui-table.html.twig
+++ b/core/modules/field_ui/templates/field-ui-table.html.twig
@@ -36,7 +36,7 @@
  * - no_striping: A boolean indicating that the row should receive no striping.
  * - header_columns: The number of columns in the header.
  *
- * @see template_preprocess_table()
+ * @see template_preprocess_field_ui_table()
  *
  * @ingroup themeable
  */