ADDITIONAL SYSTEM INFORMATION :
I am using the UK locale so short local date format is day/month/year (e.g. 4/7/21 is 4th of July.)

A DESCRIPTION OF THE PROBLEM :
If you type a date into the text field of DatePicker using a 2 digit year value - e.g. 1/1/21 - the date is set as being in the first century CE. I.e 1/1/21 comes out as 1st of January AD21 NOT AD2021 as would be expected.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a trivial application with a DatePicker; use normal logging to show the value of the date entered in the text field.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Date should resolve to the 21st century
ACTUAL -
Date resolves to the first century CE

FREQUENCY : always