Unable to open the notification of the deleted user

Issue

• Steps to reproduce:
  1. Start Liferay DXP 7.4
  2. Navigate to Configuration > Workflow and apply the 'single approver' workflow on 'Content Pages'.
  3. Create a new user by navigating to the Users & Organization.
  4. Login with the newly created user.
  5. Create a new content page and submit it for publication.
  6. Log out with that user.
  7. Sign in with admin(test user).
  8. Delete the created user.
  9. Navigate to the User Icon and click on the notification.
  10. 'Workflow is temporarily unavailable' is showing on the UI.
  Expected Result: User must be able to open the notification.
  

  Actual Result: User is unable to open the notification and getting the following errors in the console.

  2022-10-04 12:25:38.069 ERROR [http-nio-8080-exec-2][PortletServlet:117] null
  javax.portlet.PortletException: javax.servlet.ServletException: com.liferay.portal.kernel.exception.NoSuchUserException: No User exists with the primary key 43128
  at com.liferay.portlet.internal.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:307) ~[portal-impl.jar:?]

Environment

• Liferay DXP 7.4

Resolution

• The observed behavior is a known Liferay DXP bug.
• If the hotfix is required for this issue, please create a support ticket requesting the hotfix by attaching the patch details.
• Installing a hotfix will guide to installation of the hotfix in the respective environment.

Additional Information

• LPS-164769