Show Closed Issues That Are Assigned to a Sprint on Planning Board

If a sprint that has not yet started was assigned to a closed ticket, the ticket is not visible on the planning board. When the sprint starts, the closed tickets seemingly appear out of nowhere in the new sprint.

This could be avoided by showing all tickets relevant to a sprint, regardless of their status. The board manager would then be able to remove issues from the sprint that were closed even before the sprint begins.