JDJayakumar Duraisamy Syncfusion Team January 18, 2019 06:45 AM UTC
We regret the inconvenience caused.
We have analyzed the reported query. As per our behavior, EJ1 Gantt has not allow predecessor to mapping with parent task. Hence, we have confirmed this as a bug and logged a bug report. You can also track the bug status through our feedback portal as below,