Summary

Task Report macro will show duplicated tasks if:

1. There are duplicated users across multiple user directories
2. The report is sorted by Assignee

Steps to Reproduce

1. Have a user with the username "admin" in Confluence Internal Directory
2. Create a page, add task list and add "admin" to the task
3. Add a "Task Report" on the same page. Save the page. It should look like this:
   
4. Connect to an LDAP that contains a user with the username "admin" as well.
5. Go to the page with the Task Report, sort the list based on Assignee

Expected Results

There is only 1 task appear on the report

Actual Results

Duplicated task appears for that user

Notes

If we add another user directory that contains a user with the same username, "admin", the report will now show 3 tasks.

Workarounds

Some users have reported that by changing the sort order to something else for the macro (such as 'Due date' instead of 'Assignee') will remove the duplicated tasks in the list.