A Jira custom field of type date picker selects an incorrect date when a certain date is selected by the user while creating a Bug

Follow below Steps to Reproduce Issue :

  1. Please replicate the Date and Time configuration in Jira (as attached in below image)
  2. Create custom field of type date picker and add it to your issue screen
  3. Click on the “Create Bug” button.
  4. In the “Create Issue” window, select a Date value in the date picker custom field.
  5. Observe the value selected in the custom field.
  • Actual Result:
    • The date value selected is set to the 1st date of the month (irrespective of the date clicked on by the user):

Expected Result:

  • The date value selected must be the same as the one clicked on by the user in the UI in the same format:

Date & Time configuration :

  • Date time format screenshot:

Jira Administration settings >> System >> General Configuration >> Advanced settings

Note: 1. This issue is intermittent (not facing everytime)
2. The new format of the date picker custom field (shown in the screenshots) was introduced by Jira in v9.5.x – where a “confirm” & “cancel” button was added (therefore, facing this issue in that layout)
3. We are facing error in console in jira calendar plugin lib and after that facing this issue (Maximum call stack size exceeded error)

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