This is still firing twice in the latest ST build. The problem is the date value is changing from the first time it fires to the second. tried event binding at the controller and on the view, both exhibit the same bug.
the first time 'change' fires, date is short : 2012-10-06, the second time it fires, the date param is a date long: Fri Sep 07 2012 00:00:00 GMT-0400 (EDT).
can we have a workaround or an ETA on the fix? Senchas reply was back in Apri... been many months now.