I noticed that in some page of my website, implemented with Odoo 11, the <!DOCTYPE html> is missing.
This is probably main cause of an issue linked to the product table in the shop.
I checked the "web.layout" view and the code is there:
<t name="Web layout" t-name="web.layout"><!DOCTYPE html>
But the property is not shown if I check the source code of the "shop" page, it is only shown if I login as administrator to the site.
Any suggestion on how to fix the issue?