Backlog by role report, does not include tasks unless they have a role set.

Backlog reports, by role, (or by objective) do not include tasks unless they have a role set (or objective). So tasks can be missed unless all boards and lists are 'manually' checked. Ideally all unscheduled tasks should appear in Backlog so they can be acted upon - which could include, assign a role, schedule in Planner, move from a Sometime/Maybe list to a more active list, etc.