1. Create 3 resources as follows.
test1 : project manger and risk owner who has all global access rights
test2 : Assignee on Associated Action Items who has all global proect view access rights
test3 : project team staff who has all global access rights
<Please see attached file for image>

2. Create a project with test 1 user and add test2 and test3 user as staff.
<Please see attached file for image>

<Please see attached file for image>

3. create a risk.
<Please see attached file for image>

<Please see attached file for image>

4. select Associated Action Item tab and create action item.
Set test2 as Assignee.
<Please see attached file for image>

5. Login with test2 user and select Associated Action Items tab.
Then can see action item.
<Please see attached file for image>

If click the action item, then can see it successfully.
<Please see attached file for image>

6. Login with test3 user and select Associated Action Items tab.
Then can see action item.
<Please see attached file for image>

If click the action item, then can see CAL_06038 error.
<Please see attached file for image>

If click collboration -> Action Items then can see the action item.
If click the action item, then can see it successfully.
<Please see attached file for image>