I've done something that has added Task to my project Sprint and Backlog menus.
Also, Tasks appear in the Backlog, along with the User Stories to which they belong (i.e., they appear effectively twice in the Backlog). This is almost certainly down to my playing around with Tuleap in the early days of using it, but now I cannot find what I've done. I don't think it's tracker hierachy
because that is the same as in another project, which doesn't have the same problem.
What have I done?
Agile Dashboard / Administration / Sprint Planning: Edit and change the multiselection against "This planning allows assignment of".