VRVigneshkumar Ramasamy Syncfusion Team November 8, 2018 01:41 AM
Thanks for using Syncfusion products.
We confirmed that the reported issue “IsExpand and HasChildNodes property is true for the item when there are no items in the subgroup” is a defect and logged a defect report for this issue. The fix will be included in our upcoming 2018 Volume 4 main release which is scheduled to be rolled out by the mid of December month. We will appreciate your patience until then.