Date picker field shows today's date when editing form data

[syntactic-salt]

I have this date picker implemented on a form who's data is saved and can then be edited at a later time. When I first load the form with no data, no date is displayed in the date picker field, I can pick a date with the date picker which then displays in the field, and save the data. When I come back to the form to edit the data, the date picker field shows today's date instead of the date contained in the model. When I save the form data without modifying the form, the date is in fact the correct date from the model, it is just not being displayed in the date picker field. Any ideas on why this is happening?