after calling gantt.deleteTask gantt.dataProcessor.autoUpdate is unintentionally set as true. You can try it on official sample: docs.dhtmlx.com/gantt/samples/07 … rting.html
open console and paste following:
var dp = new gantt.dataProcessor("http://example.com"); dp.init(gantt); dp.setTransactionMode("REST"); dp.autoUpdate = false; console.log(dp.autoUpdate)// prints false gantt.deleteTask(6) console.log(dp.autoUpdate)// prints true and after that point auto update really active
after calling gantt.deleteTask auto update is really active and works where as it shouldn’t.