Display sub task icon on Parent task even when all sub tasks are completed
At the moment Parent tasks with active sub tasks will display an icon to show there are sub tasks present, even if the sub tasks are not visible.
When all the sub tasks are completed the sub task icon disapears.
I would like to see the sub task icon, even when all the sub tasks are completed, so I can identify the Parent task as a Parent. Maybe the icon could be in a different colour (as for the existing Parent and Sub Task icons). Also this could be made a configurable option for those who prefer the existing arrangement.