Merge branch 'MC-17574' of https://github.com/magento-tango/magento2ce into pr_2019_07_11

Author: vkolesny

lib/web/mage/adminhtml/wysiwyg/tiny_mce/tinymce4Adapter.js

@@ -484,13 +484,22 @@ define([
          * @return {Boolean}
          */
         toggle: function () {
+            var content;
+
             if (!tinyMCE4.get(this.getId())) {
                 this.turnOn();
 
                 return true;
             }
+
+            content = this.get(this.getId()) ? this.get(this.getId()).getContent() : this.getTextArea().val();
+
             this.turnOff();
 
+            if (content.match(/{{.+?}}/g)) {
+                this.getTextArea().val(content.replace(/"/g, '"'));
+            }
+
             return false;
         },