Roll back the changes

Author: glo71317

app/code/Magento/Checkout/view/frontend/templates/cart/item/configure/updatecart.phtml

@@ -8,10 +8,10 @@
 ?>
 <?php $_product = $block->getProduct(); ?>
 <?php $buttonTitle = __('Update Cart'); ?>
-<?php if ($_product->isSaleable()):?>
+<?php if ($_product->isSaleable()) :?>
     <div class="box-tocart update">
         <fieldset class="fieldset">
-            <?php if ($block->shouldRenderQuantity()):?>
+            <?php if ($block->shouldRenderQuantity()) :?>
             <div class="field qty">
                 <label class="label" for="qty"><span><?= $block->escapeHtml(__('Qty')) ?></span></label>
                 <div class="control">
@@ -40,7 +40,11 @@
     <script type="text/x-magento-init">
         {
             "#product_addtocart_form": {
-                "Magento_Catalog/js/validate-product": {}
+                "validation": {},
+                "addToCart": {
+                    "cartButtonId": "#product-updatecart-button",
+                    "cartForm": "#product_addtocart_form"
+                }
             }
         }
     </script>