I'm not sure when this feature was added but the backlog panel in the team room currently hypothetically groups backlog items into sprints based on size and historic velocity. However there is no indication that this grouping is a hypothetical one, and it can look like it is reporting a completely different sprint backlog than any of the other panels in the team room. I would either like this panel to be clarified so that it's intent is known when viewing, or for that hypothetical grouping feature to be customizable so I can turn it off...or ideally both.