Yeah, the blue button in each question item is only for reordering. You can move questions without clicking on them first, btw; not sure if my demo communicated that.
I.e. If you click the question item (but not the blue button), the question is visible on the right. If you click the blue button in the list, the question goes into reorder mode. Those two things are separate from each other, so you can reorder a question that's not currently active.
I.e. If you click the question item (but not the blue button), the question is visible on the right. If you click the blue button in the list, the question goes into reorder mode. Those two things are separate from each other, so you can reorder a question that's not currently active.