Unable to disable email option by denying PDPermReqOprUIemail permission.

I am creating a plugin where it creates and opens a secured PDF file. As part of opening the secured PDF file I am using AVDocOpenFromPDDocWithParams and specifying callback for the permissions. The other options for disabling the print and save, seems to work fine as part of the callback. However, I am unable to disable the email button by denying "'PDPermReqOprUIemail'' as per the logs this particular permission was never requested. Is this feature broken or am I doing something wrong?

On similar lines, starring this document is also uploading this document to the cloud, how can this also be disbaled?

Thanks in advance.

            params.usePermReqProc = true;
            params.permReqProc = pPermReqCallback;


 PermReqCallback(AVDoc doc, PDPermReqObj obj, PDPermReqOpr opr)
{
    // Deny permission to enable the email button
    if (PDPermReqOprUIemail == opr) {
        return 1;
    }
    
    //Handle other permission request cases....
}