DatePicker does not show selected date🐛

[pamtbaau]

Describe the bug
DatePicker shows placeholder texts 'year', 'month' and 'day' when value of property 'selected' is null;
DatePicker is empty when value of property 'selected' is set to a valid DateTime.

To Reproduce
Add the following to widget:

DatePicker(
  selected: selectedDate,
  fieldOrder: const [DatePickerField.year, DatePickerField.month, DatePickerField.day],
  onChanged: (DateTime date) {
    selectedDate = DateTime(date.year, date.month, date.day);
    setState(() {});
  },
)

• On first paint of widget, variable 'selectedDate' is null. DatePicker shows placeholders.
  

• After selecting a date, fields year, month, day remain empty.
  

• When opening the datepicker, it shows correctly the date from variable 'selectedDate'

Expected behavior
I expect the fields year, month, day to be filled with the selected date.

Screenshots
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Additional context
Add any other context about the problem here.

[bdlukaa]

looks like the text color isnt applied to them

[pamtbaau]

Downloaded latest master and DatePicker is working fine. Thanks!