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 commentTammiG commented
My planner schedule view changed automatically to include all completed task. While I agree this may be useful in some cases, it is only clutter in others. This should be an option for each user to switch on/off as needed.