[BUG] New assignee field not working correctly

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: Master
• Component/s: Workflow
• Labels: None
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/84463

Current issue: New assignee field not working correctly

Steps to reproduce:

1. Associate Single Approver with blogs entries
2. Create 5 blogs entries
3. Go to Single Approver Metrics > All Items
4. Select all tasks to be reassigned
5. In each New Assignee entry, type the name of an eligible assignee
6. Delete the assignee from the first entry

Actual result: all fields are being erased

Expected result: only the edited field should be impacted

Environment:
master DXP: 8e3eb3040123d4bec5990098c48d9194bdec18eb
Updated on: Fri Feb 7 00:01:28 2020 -0800