enables showing unscheduled tasks
gantt.config.show_unscheduled = false;
Note, that by default, the unscheduled tasks are displayed as an empty row. To display them in the timeline area, you need to set the value of the show_unscheduled property to false. This may be confusing to you, but we will fix the inconsistency between the name of the property and its values in one of the future versions.