SAShameer Ali Baig Sulaiman Ali Baig Syncfusion Team February 7, 2020 02:59 PM
Greetings from Syncfusion support.
We have looked into your reported problem in TreeView and we tried to replicate the reported issue at our end. But, the reported issue was not reproduced, as the Drag and Drop functionality in TreeView component is working properly and it does not thrown the reported script error.
Please, the sample which we have prepared for your reference.