Navigation / Mega menu missing when Varnish Cache is activated with Magento 2

In some cases, when Varnish Cache is activated, the navigation/mega menu may disappear.

This occurs due to a known Magento 2 + Varnish issue.

Solution

To fix this, you need to remove the TTL attribute from Magento’s default layout file:

1. Open the file:

/vendor/magento/module-theme/view/frontend/layout/default.xml

2. Locate the following line:

ttl="3600"

3. Remove the ttl="3600" attribute and save the file.

After this change, the navigation menu should reappear.

Reference

For more details, see the official Magento GitHub issue:

Magento 2 Issue #3421

Updated on: 16/09/2025