Date Picker object having issues updating

Hard coding a data object and using your code works for me. Maybe try that to narrow it down? Or try deleting the Date Picker element and re-adding. I’ve had that strangely work in the past.

let data = { 
       individual : { 
              dateOfBirth : 'Fri Jan 13 2017'
       }           
}
if(data.individual.dateOfBirth){ 
       console.log(data.individual.dateOfBirth); //'Fri Jan 13 2017'
       console.log(typeof data.individual.dateOfBirth); //string
       const date = new Date(data.individual.dateOfBirth);
       console.log(date); //object --> Date printed properly for default date object
       console.log(date.toDateString()); //'Fri Jan 13 2017'
       $w('#dateOfBirth').value = date; //Datepicker shows 01/13/17
}