After redeploying portlet, staging publication will fail with ClassCastException

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE
• Fix Version/s: 6.2.X EE
• Component/s: Staging
• Labels:
  • ee-ts
  • liferay-fixpack-portal-168-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/matethurzo/liferay-portal-ee/pull/230

Reproduction steps

1. Add Calendar portlet to (CE / EE)the page
2. Set up Local Live staging for the site
3. Add an event to the calendar
4. Publish to Live
   Checkpoint: Successful publication
5. Redeploy Calendar portlet
6. Add an another event to the Calendar
7. Publish to Live

Result: The publication will fail and you can see a ClassCastException in the logs