AC-1429: Customer Segment is broken

Author: krissyhiserote

lib/web/mage/backend/tabs.js

@@ -239,11 +239,14 @@ define([
     // Extension for mage.tabs - Ajax functionality for tabs
     $.widget('mage.tabs', $.mage.tabs, {
         options: {
-            ajaxOptions: {
-                data: {
-                    isAjax: true,
-                    'form_key': typeof FORM_KEY !== 'undefined' ? FORM_KEY : null
-                }
+            beforeLoad: function( event, ui ) {
+                ui.ajaxSettings.type = 'POST';
+                ui.ajaxSettings.hasContent = true;
+                ui.jqXHR.setRequestHeader("Content-Type", ui.ajaxSettings.contentType);
+                ui.ajaxSettings.data = jQuery.param(
+                    {isAjax: true, 'form_key': typeof FORM_KEY !== 'undefined' ? FORM_KEY : null},
+                    ui.ajaxSettings.traditional
+                );
             },
 
             /**