A cloud-based task management app from Microsoft that helps users organize and manage daily tasks across devices.
I am also looking answer for this issue.
I understand that you can't sort bucket-view by due date possibly because you can sort it by drag-and-drop, but there still should be a way to auto sort a view by due date (which will of course mess drag-and-drop sorts if you have used that).
I even tried to create a workflow with Power Automate (just as I did to auto assign tasks to the creator of the task, since there is not GUI implementation for this in the Planner), but there is no available action to change "list ID" (or what ever is the "invisible" field in the task that saves the task location inside the bucket) so I think Power Automate is also a dead end solution for this.