SP2 Integrity checking: Pdisplay issues when listing the errors during workflow - blank page is displayed

Cf parent bug.

I activated the url and WAI integrity checking. While trying to validate a page with a link in big text pointing to a non validated page (=403 error on the link -> validation is prohibited), this generates an error in my pdisplay status (normal!). When clicking on the error listing suggested by the pdisplay, this redirect me to a blank pop-up!!!