Mobile datepicker won't select February dates

Mobile datepicker won't select February dates

I have a datefield in a form that has a problem selecting a February date on a mobile device. It automatically moves the date to the same day in March. Selecting a date in January or March does not show this behavior.

There is very little code in the 'on user input' that just updates another date field:

// update the end date
row.End_Date_Time = thisapp.com.addDuration(row.Start_Date_Time, row.Duration) ;

row.edited = true ;


Selecting a February date using a PC does not have this problem either. It occurs on a mobile device (2 different smart phones show this behavior) using the creator app (Android).