Ordering tasks into sources diagram

GanttProject Desktop Support
#1

After assignements, why tasks appear disordered at Sources Diagram?
If I want to see the charge of a worker (source), when I open this source, tasks appear disordered. I have two questions:

  1. Is there a reason for it?
  2. Is it possible to order tasks? If yes, How can I do it?
#2

The order is one in which the tasks were assigned. You can reorder tasks manually using Alt + :arrow_up: :arrow_down: keys or corresponding buttons in the toolbar above the resource table.