JDJayakumar Duraisamy Syncfusion Team April 24, 2017 06:32 AM UTC
We regret for the inconvenience caused.
We could reproduce the issue in Milestone data behavior in Gantt and we have logged a bug report on this. The fix will be included in our upcoming volume 2 main release which is available at the end of the April 2017.
Please let us know if you require further assistance on this.