magento2/issues/12087: Changes for Adminhtml Widget Options class.

Author: engcom-Kilo

app/code/Magento/Widget/Block/Adminhtml/Widget/Options.php

@@ -158,6 +158,10 @@ protected function _addField($parameter)
             $data['value'] = $parameter->getValue();
         }
 
+        if ($parameter->getType() == 'text' && $data['value'] != '') {
+            $data['value'] = $this->_widget->decodeReservedChars($data['value']);
+        }
+
         //prepare unique id value
         if ($fieldName == 'unique_id' && $data['value'] == '') {
             $data['value'] = hash('sha256', microtime(1));

app/code/Magento/Widget/Model/Widget.php

@@ -477,6 +477,24 @@ private function encodeReservedChars($string)
         );
     }
 
+    /**
+     * @param $string
+     * @return array
+     */
+    public function decodeReservedChars($string)
+    {
+        $map = [
+            '{' => urlencode('{'),
+            '}' => urlencode('}')
+        ];
+
+        return str_replace(
+            array_values($map),
+            array_keys($map),
+            $string
+        );
+    }
+
     /**
      * @param $widget
      * @param $name