How do I navigate to the bound date?

[heecheon92]

let's say a date object is bound to a day picker.

If I set date from outside of the day picker, the day picker shows the correct date.

However, when I click the input to display calendar, display date still shows date prior to I manually set.

How do I set the display date when the bound date change regardless where the change was made?

[heecheon92]

defaultMonth was the culprit.