When auto schedule=false, holidays are also skipped.Can I set "correct_work_time = true" for a task?

Gantt
#1

When auto_schedule=false, holidays are also skipped.
Can I set “correct_work_time = true” for a task?

As follows:
The task whose id is 21 is set to auto_schedule=false.
I set Monday as a holiday.
I find the task as id = 21 is changed.

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My code is as follows.

<div id="gantt_here" style="width: 100%; height: 90%"></div>

<script>
	gantt.plugins({
		auto_scheduling: true
	})

	gantt.templates.scale_cell_class = function (date) {
		if (!gantt.isWorkTime(date)) {
			return 'weekend'
		}
	}
	gantt.templates.timeline_cell_class = function (task, date) {
		if (!gantt.isWorkTime({ date, task })) {
			return 'weekend'
		}
	}

	gantt.config.work_time = true

	gantt.config.bar_height = 20

	gantt.config.auto_scheduling = true
	gantt.config.auto_scheduling_strict = true
	gantt.config.auto_scheduling_compatibility = false

	gantt.config.date_format = '%d-%m-%Y'

	gantt.config.start_date = new Date(2018, 3, 1)
	gantt.config.end_date = new Date(2018, 5, 1)

	gantt.attachEvent('onBeforeAutoSchedule', function () {
		// gantt.message("Recalculating project schedule...");
		return true
	})
	gantt.attachEvent('onAfterTaskAutoSchedule', function (task, new_date, constraint, predecessor) {
		console.log('onAfterTaskAutoSchedule', task)
		if (task && predecessor) {
			// gantt.message({
			// 	text: "<b>" + task.text + "</b> has been rescheduled to " + gantt.templates.task_date(new_date) + " due to <b>" + predecessor.text + "</b> constraint",
			// 	expire: 4000
			// });
		}
	})

	console.log(gantt.version, gantt.license)
	const ganttData = {
		data: [
			{ id: 11, text: 'Project #1', type: 'project', progress: 0.6, open: true },
			{
				id: 12,
				text: 'Task #1',
				start_date: '02-04-2018',
				duration: '5',
				parent: '11',
				progress: 1,
				open: true,
				constraint_type: 'snet',
				constraint_date: '09-04-2018'
			},
			{ id: 13, text: 'Task #2', start_date: '03-04-2018', type: 'project', parent: '11', progress: 0.5, open: true },
			{ id: 14, text: 'Task #3', start_date: '02-04-2018', duration: '6', parent: '11', progress: 0.8, open: true },
			{ id: 15, text: 'Task #4', type: 'project', parent: '11', progress: 0.2, open: true },
			{
				id: 16,
				text: 'Final milestone',
				start_date: '15-04-2018',
				type: 'milestone',
				parent: '11',
				progress: 0,
				open: true
			},
			{ id: 17, text: 'Task #2.1', start_date: '03-04-2018', duration: '2', parent: '13', progress: 1, open: true },
			{ id: 18, text: 'Task #2.2', start_date: '06-04-2018', duration: '3', parent: '13', progress: 0.8, open: true },
			{ id: 19, text: 'Task #2.3', start_date: '10-04-2018', duration: '4', parent: '13', progress: 0.2, open: true },
			{ id: 20, text: 'Task #2.4', start_date: '10-04-2018', duration: '4', parent: '13', progress: 0, open: true },
			{
				id: 21,
				text: 'Task #4.1',
				start_date: '02-04-2018',
				duration: '4',
				parent: '15',
				progress: 0.5,
				open: true,
				auto_scheduling: false
			},
			{ id: 22, text: 'Task #4.2', start_date: '02-04-2018', duration: '4', parent: '15', progress: 0.1, open: true },
			{
				id: 23,
				text: 'Mediate milestone',
				start_date: '14-04-2018',
				type: 'milestone',
				parent: '15',
				progress: 0,
				open: true
			}
		],
		links: [
			{ id: '10', source: '11', target: '12', type: '1' },
			{ id: '11', source: '11', target: '13', type: '1' },
			{ id: '12', source: '11', target: '14', type: '1' },
			{ id: '13', source: '11', target: '15', type: '1' },
			{ id: '14', source: '23', target: '16', type: '0' },
			{ id: '15', source: '13', target: '17', type: '1' },
			{ id: '16', source: '17', target: '18', type: '0' },
			{ id: '17', source: '18', target: '19', type: '0' },
			{ id: '18', source: '19', target: '20', type: '0' },
			{ id: '21', source: '15', target: '23', type: '0' }
		]
	}

	// gantt.config.deepcopy_on_parse = true;

	gantt.config.correct_work_time = true
	gantt.config.work_time = true
	// 用户更新任务后
	gantt.attachEvent('onAfterTaskUpdate', function (id, task) {
		console.log('Task updated1', task)
		gantt.message({
			text: 'onAfterTaskUpdate: ' + task.text,
			expire: 4000
		})
	})
	gantt.init('gantt_here')
	gantt.parse(ganttData)

	console.log('ganttData', ganttData)

	const update = () => {
		gantt.setWorkTime({ day: 1, hours: false }) // make Tuesdays day-off
		gantt.getDatastore('link').clearAll()
		console.log('before', gantt.copy(gantt.getTask(12)))
		gantt.parse(ganttData)
	}
</script>
#2

Hello,
I think it is expected behavior that if you enable the correct_work_time config and load the data, the tasks are moved to the working dates. This is the reason why the correct_work_time config exists:
https://docs.dhtmlx.com/gantt/api__gantt_correct_work_time_config.html

It works that way regardless of the auto-scheduling feature. And it is related to the working time feature:
https://docs.dhtmlx.com/gantt/desktop__working_time.html

The config works for all tasks you have in Gantt.
If you want that feature to work only for the specific tasks, you need to implement a custom solution.

You can use the getClosestWorkTime method to modify the start_date parameter:
https://docs.dhtmlx.com/gantt/api__gantt_getclosestworktime.html

Then you need to manually calculate the end_date parameter to keep the task’s duration.

If you want this to work when you load tasks, you can add your code into the onTaskLoading event handler:
https://docs.dhtmlx.com/gantt/api__gantt_ontaskloading_event.html

Here is an example of how it can be implemented:

gantt.attachEvent("onTaskLoading", function (task) {
    if (task.auto_scheduling !== false) {
        task.start_date = gantt.getClosestWorkTime(task.start_date)
        task.end_date = gantt.calculateEndDate(task.start_date, task.duration)
    }
    return true;
})

Here is the snippet:
https://snippet.dhtmlx.com/ka199aku

If you want this functionality to work in other scenarios, you need to use other event handlers.