The action-above-the-parent is a bug i reported a short while ago. Here's how I reproduced this:
0. Turn on view bar, set to ungrouped/unsorted/all/any/all
1. Create a new project, give it a name
2. Add an action (e.g. hit return), give it a name and a context
3. Add another action but before entering any information, indent it
The last action will shift under the first item, and the first item will go bold and gain a disclosure triangle.
Repeat the steps but for step 0, set the view bar to ungrouped/unsorted/NEXT/any/all
Now, the last action will not shift under the first item.
And, if you try it with next review/due/available/any/any, the last action item will appear *above* the first one!