Hello,
When creating a Joomla menu item of type SP Page Builder → Page, the "Select a Page" popup returns "403 Forbidden – Access to this page is forbidden."
We isolated the issue to the following URL parameter:
The SP Page Builder page selector works normally without jform_request_id.
Adding function=jSelectPage also works.
Adding jform_request_id=test immediately produces 403.
SP Page Builder pages can otherwise be edited normally in both frontend and backend editors. The administrator is a Super User, and temporarily disabling Securitycheck's Web Firewall did not resolve the issue.
The menu selector worked in previous versions, although we cannot identify exactly when it stopped.
Could you please investigate whether this is a compatibility or request-validation issue in the SP Page Builder page-selection modal?
We would appreciate a fix that does not require modifying Joomla core files.
Thank you.