Redmine

Maybe this is be the expected behaviour but in my opinion, this seems to be broken.

This happens, if you order the issue list by parent task.

Unordered:

IssueID	ParentTaskID
1	Nil
2	1
3	Nil
4	Nil
5	6
6	Nil

Unordered ascending by ParentTaskID

IssueID	ParentTaskID
1	Nil
2	1
3	Nil
4	Nil
6	Nil
5	6

Unordered descending by ParentTaskID

IssueID	ParentTaskID
6	Nil
5	6
4	Nil
3	Nil
1	Nil
2	1

I'm using Redmine 2.2.1. Can anyone confirm this or explain if this is the expected behaviour?

I would rather expect this:
Unordered ascending by ParentTaskID

IssueID	ParentTaskID
2	1
5	6
1	Nil
3	Nil
4	Nil
6	Nil