Windows Phone Picker Unfocus event not raised

Hi!

I'm using a Picker to navigate to a new page, where the user can fill out the selected form form the picker.
On iOS and Android the Picker.Unfocus event raised properly, and the new page appears, but not in WP.
The SelectedIndexChanged event is no good for me, the user can select the same option multiple times in a row, so I really need some kind of solution or workaround for the Unfocus event.

Regards and thanks,
gondir