Hi Michael,

Thank you for the provided example and steps to reproduce the loading behavior.

It does seem a bit inconsistent, and our developers will take a look at the behaviour when the issue is prioritised by the team. In the meantime, you can expand the node when it is being dropped over the parent by using the expandBy property.

Updated example - https://stackblitz.com/edit/angular-xiwrcwsx-6krxxjib?file=src%2Fapp%2Fapp.component.ts

Feel free to also subscribe to the GitHub issue if you prefer it as a platform:

https://github.com/telerik/kendo-angular/issues/4729

Your Telerik Points will also be updated for reporting this behavior to us.

Regards,
Yanmario
Progress Telerik