Observable/view model not getting updated when the value is changed in input field

[nvnvenki]

When the date value is entered manually to the input field the date value in the text field and in the date picker is changed but not the view model which is bound to the text input.

Steps to reproduce the issue

• Change the input field value to some other date by manually typing in the date in the text field.
• Observe that the datepicker auto selects the date which is entered and don't click on focused date.
• Focus out from input box. Check that the observable value still unchanged and it is different from value in the input field.

Please check the below example.
http://jsfiddle.net/nvnvenki/bfbnxwx9/