Pages with page titles containing symbols fail to export to PDF
Platform Notice: Server and Data Center Only. This article only applies to Atlassian products on the server and data center platforms.
When exporting a page to PDF, you receive a "Page not found", 403, 443, or 404 error page.
Using Symbols "%" or "?" or "+" in the title of a page are illegal characters when converted to PDF. This is a limitation of the PDF export engine.
Do not use "%" or "?" or "+" in the title. See CONF-18704 for more information.