MAGETWO-71759: Impossible place order from admin using saved PayPal Pro credit card

Author: iivashchenko

app/code/Magento/Sales/view/adminhtml/templates/order/create/billing/method/form.phtml

@@ -39,7 +39,11 @@
     </dl>
 </div>
     <script>
-        require(["Magento_Sales/order/create/form"], function(){
+        require([
+            'mage/apply/main',
+            'Magento_Sales/order/create/form'
+        ], function(mage) {
+            mage.apply();
         <?php if ($_methodsCount != 1):?>
             order.setPaymentMethod('<?= /* @escapeNotVerified */ $block->getSelectedMethodCode() ?>');
         <?php endif; ?>

dev/tests/integration/testsuite/Magento/Sales/Block/Adminhtml/Order/Create/Billing/Method/FormTest.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Sales\Block\Adminhtml\Order\Create\Billing\Method;
+
+use Magento\Framework\ObjectManagerInterface;
+use Magento\Framework\View\LayoutInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+
+/**
+ * Test for order billing method form.
+ *
+ * @magentoAppArea adminhtml
+ */
+class FormTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var ObjectManagerInterface
+     */
+    private $objectManager;
+
+    /**
+     * @var LayoutInterface
+     */
+    private $layout;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp()
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->layout = $this->objectManager->get(LayoutInterface::class);
+    }
+
+    /**
+     * Checks if billing method form generates contentUpdated event
+     * to parse elements with data-mage-init attributes.
+     */
+    public function testContentUpdated()
+    {
+        /** @var Form $block */
+        $block = $this->layout->createBlock(Form::class, 'order_billing_method');
+        $block->setTemplate('Magento_Sales::order/create/billing/method/form.phtml');
+
+        $this->assertContains('mage.apply()', $block->toHtml());
+    }
+}