Updates from NS to the category header or name will not be worked on the real-time so for that, the layout should be having cacheable false setting. We can achieve the option in the following method.
Create a custom module for the changes
app/code/VendorName/ModuleName/registration.php
<?php
\Magento\Framework\Component\ComponentRegistrar::register(
\Magento\Framework\Component\ComponentRegistrar::MODULE,
'VendorName_ModuleName',
__DIR__
);
app/code/VendorName/ModuleName/etc/module.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
<module name="VendorName_ModuleName" setup_version="1.0.0">
<sequence>
<module name="Magento_Theme"/>
</sequence>
</module>
</config>
app/code/VendorName/ModuleName/etc/di.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<preference for="Magento\Theme\Block\Html\Topmenu" type="VendorName\ModuleName\Block\Html\Topmenu" />
</config>
app/code/VendorName/ModuleName/Block/Html/Topmenu.php
<?php
namespace VendorName\ModuleName\Block\Html;
class Topmenu extends \Magento\Theme\Block\Html\Topmenu
{
/**
* Get block cache life time
*
* @return int
* @since 100.1.0
*/
protected function getCacheLifetime()
{
return 0;
}
}