I set up a Scrum board that should display planned stories grouped by the epic they belong to. The columns at the top of the board indicate that certain columns should contain stories, but I don't see any. In addition, I get a warning saying "No Issues are currently visible". The stories reappear when I set 'Base Swimlanes on' to 'No Swimlanes', but I want to group them into epic swimlanes.
What could be causing this unexpected behavior?