XWiki.PDFClass is not triggering required rights warnings

Steps to reproduce:

1. As a user with script right, add a XWiki.PDFClass object with some properties that contain scripts following https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Configuration/#HCustomizingthePDFexportLook26Feel
2. As a user without script right, try editing the document with the template.

Expected result:

A warning is displayed that the PDFClass could be broken.

Actual result:

No warning is displayed.