Support/Helpdesk case tasks are missing on the TASKS page, but the count is seen on the tab.
During development stage, or QA testing, users may add tasks to Support/Helpdesk cases...but then the tasks are not visible. However, the TASK count does display on the TASK tab of the case. (ie. TASKS (3))
SOLUTION:
This occurs because the "PeopleSoft_User" role is not assigned to the current user. Users must use PeopleSoft_User role to see case tasks.
TO FIX:
1) Go to PeopleTools > Security > User Profiles > User Profiles and open the user profile who is is reporting the issue.
2) On the ROLES tab, add the role "PeopleSoft_User". Ask the user to logout/login. The tasks will now be visible on TASKS page from a case.