Strange behaviour

sometimes the hierarchy project: task -
works flawlessly, sometimes not (see images).

Why in the same file sometimes I see the task sometimes I don’t see them?

The project “Da leggere” doesn’t actually have any child items… those two tasks that follow it are siblings to it. That’s why they don’t show when “Da leggier” is focused.

If you indent those two items one more level then I think it will work as you expect.

If you haven’t yet I recommend watching the short TaskPaper screencasts here:

Especially the first one illustrates what’s going on pretty well I think.