In the prior release (I think they were on 4.6) this worked, it popped up the OK / Cancel dialog. Now, what I am seeing is that the first time you go to the PRD it works, but subsequent times it acts as if you just pressed the cancel button with no dialog display.
UPDATE: After fiddling with this a bit, now it consistently does not pop up the confirm() dialog.
Any ideas? Troubleshooting tips?