ADDITIONAL SYSTEM INFORMATION :
Is a problem in 17, works in jdk-10.0.1.jdk, not sure when the problem arose

A DESCRIPTION OF THE PROBLEM :
Working output

Incorrect output

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See test case

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
14-9-2022
14-09-2022
14-Sep-2022
14-September-2022
14-8-2022
14-08-2022
14-Aug-2022
14-August-2022
14-7-2022
14-07-2022
14-Jul-2022
14-July-2022
14-6-2022
14-06-2022
14-Jun-2022
14-June-2022
14-5-2022
14-05-2022
14-May-2022
14-May-2022
14-4-2022
14-04-2022
14-Apr-2022
14-April-2022
14-3-2022
14-03-2022
14-Mar-2022
14-March-2022
14-2-2022
14-02-2022
14-Feb-2022
14-February-2022
14-1-2022
14-01-2022
14-Jan-2022
14-January-2022
14-12-2021
14-12-2021
14-Dec-2021
14-December-2021
14-11-2021
14-11-2021
14-Nov-2021
14-November-2021
14-10-2021
14-10-2021
14-Oct-2021
14-October-2021

ACTUAL -

14-9-2022
14-09-2022
14-Sept-2022
14-September-2022
14-8-2022
14-08-2022
14-Aug-2022
14-August-2022
14-7-2022
14-07-2022
14-Jul-2022
14-July-2022
14-6-2022
14-06-2022
14-Jun-2022
14-June-2022
14-5-2022
14-05-2022
14-May-2022
14-May-2022
14-4-2022
14-04-2022
14-Apr-2022
14-April-2022
14-3-2022
14-03-2022
14-Mar-2022
14-March-2022
14-2-2022
14-02-2022
14-Feb-2022
14-February-2022
14-1-2022
14-01-2022
14-Jan-2022
14-January-2022
14-12-2021
14-12-2021
14-Dec-2021
14-December-2021
14-11-2021
14-11-2021
14-Nov-2021
14-November-2021
14-10-2021
14-10-2021
14-Oct-2021
14-October-2021


---------- BEGIN SOURCE ----------
Test case

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

class SDFTest {

private static final SimpleDateFormat sdfddMMMyyyy = new SimpleDateFormat("dd-MMM-yyyy");
private static final SimpleDateFormat sdfddMMMMyyyy = new SimpleDateFormat("dd-MMMM-yyyy");
private static final SimpleDateFormat sdfddMMyyyy = new SimpleDateFormat("dd-MM-yyyy");
private static final SimpleDateFormat sdfddMyyyy = new SimpleDateFormat("dd-M-yyyy");

public static void main(String[] args) {

GregorianCalendar cal = new GregorianCalendar();
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Non, with recoding zillions of programs to add a check for Sep/Sept grrrrr

FREQUENCY : always