Using stories and sub tasks of stories, some show up in the backlog with an expansion arrow to easily show the sub-tasks under that story. But some stories don't have the arrow, even though they have multiple sub-tasks below them.
They all seem to be set up in the same way, but I can't figure out why not all of them show the expansion arrow.
We are using stories as our roadmap items, then sub-tasks to show the work needed to deliver that item. And it looks as if some stories aren't mature enough or developed enough to have sub tasks yet, but that isn't the case.