Good news all, you can now filter by Progress using the “Filter” menu across all views, including the Schedule view.
Currently this is only available in Planner Web, we will enable in Teams next.
An error occurred while saving the commentAnonymous commented
Yes we definitely need this feature. We are using it to schedule PTO at my work and I'd like to be able to not only move my task to a "completed" bucket but I would like to complete the task so that the creator knows it's done but still be able to view the schedule and have it show up.