Issue Summary

Editing date field using calendar picker in View Issue screen doesn't work in Jira Service Management (JSM) projects.

Steps to Reproduce

1. Create a new Service Management (Service Desk) project
2. Add the Due Date system field to the View/Edit issue screen of the project
3. Navigate to an issue
4. Edit the issue, input a Due Date, save
5. In the View Issue screen, hover over the Due Date field and click the pencil icon.
6. Click the calendar icon on the right hand side and a calendar will pop up
7. Select a new date and click 'Confirm'

Expected Results

1. The new date is saved

Actual Results

1. The date does not change
   

Workarounds

Workaround 1

1. Instead of editing in the View Issue screen, click the Edit button and edit the Due Date in the Edit Screen. It works fine there

Workaround 2

1. Click on the Date picker field
2. Manually update the date
3. Click on the check mark icon
   Example: JRASERVER-74890-workaround2.mov

Notes

• This bug only impacts JSM projects, and does not occur in Business nor Software projects
• This works fine in Jira 9.4.0 but there isn't any 'Confirm' button for the calendar in this version
  
• This affects custom fields of date type as well