My Workflow Tasks cannot be sorted

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP FP80, 7.0.X, 7.1.10 DXP FP10
• Fix Version/s: 7.0.0 DXP FP89, 7.0.10.13 DXP SP13, 7.0.X, 7.1.10 DXP FP15, 7.1.X, 7.2.X, Master
• Component/s: Workflow
• Labels:
  • QA-AUTOMATION
  • ee-ts
  • fw_code_review
  • liferay-dxp-70-sp13
  • liferay-fixpack-de-89-7010
  • liferay-fixpack-dxp-15-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/69546

Steps to reproduce:

1. Start Liferay and log in as Admin
2. Enable Single Approver Workflow for Web Contents
3. Submit 3 Web Contents for publication
4. Go to My Workflow Tasks > Assigned to My Roles
5. Make sure Order by:Last Activity is selected
6. Click on the arrows to sort the Web Contents according to Ascending or Descending order

Expected result: The Web Content are sorted.
Actual result: Nothing happens.

QA/Solution Notes
The solution requires to reindex "KaleoTaskInstanceTokenField" entries through the Control Panel to make it work for existing instances.