Using Legacy Recurring, you can repeat a task after completion. For example, an overdue daily task (now due yesterday) will be due tomorrow upon completion. So far so good.
But if the task had a start date - also yesterday before it was completed - after completion it will now be starting today and due tomorrow. The start/due dates get out of sync as the due date moved forward two days and the start date only moved one day. Tomorrow's daily task will show up in the start date filters for today, even though that task has already been done today.
Please allow us to set the behavior of start dates in Legacy Recurring so we can prevent issues like this.