Datepicker pattern does not trigger a change event on main input after hidden input change

[nngu6036]

Reproduction steps:

• Create a form with date input using calendar widget, say date-of-birth
• Create a jQuery function that listen to all input change in the form, print all input values in the function
• Pick a date in the input, the listener will print the value of hidden input with latest value, and data-of-birth input with the old value

Investigation:

• When the date is selected, the hidden input value is changed, then the value of main input data-of-birth is updated programmatically via jQuery. The second change will not trigger the listener unless calling jQuery.trigger('change') for that input

[djay]

Since the user is effectively changing the value and then both fields need to be triggered