Assigning workflow task as Portal Content Reviewer throws permissions error message

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.10 EE GA1, 6.2.X EE, 7.0.1 CE GA2
• Fix Version/s: 6.2.X EE, 7.0.0 DXP FP2, 7.0.0 DXP SP1, 7.0.3 CE GA4, Master
• Component/s: Workflow
• Labels:
  • 62-ee-sp19
  • QA-AUTOMATION
  • backend_test
  • fw_test_poshi
  • liferay-digital-enterprise-70-sp1
  • liferay-fixpack-de-2-7010
  • liferay-fixpack-portal-144-6210
• Branch Version/s:
  7.0.x, 6.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Sprint: Sprint 23: Aug, 08 - Aug, 19
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/42220
• Bug Type: Regression Bug

Steps to reproduce:

1. Log in as admin (test test)
2. Create a user with Portal Content Reviewer role
3. Select single approver workflow for Blogs
4. Add a blog post
5. Log out, log in as Portal Content Reviewer
6. View notifications
7. Open Blog Post for review
8. Click on ellipsis
9. Click Assign to...
   1. Select Test Test
   2. Save

Expected Result
Workflow task is assigned to Test Test without errors.

Actual Result
Workflow task is assigned to Test Test, but a permissions error pops up along with a success message.

Reproduced on:
Tomcat 8.0 + PostgreSQL 9.4
Portal ee-7.0.x Git ID 52820e983612a7512022353442d83857c3fcb2e9