filtering treeview with drag&drop

Hi Horvath,

Thank you for your query. 

I can confirm that this is an already known and logged issue/limitation of the Kendo UI for Angular Treeview component. Please follow this link to track our progress on this issue and subscribe to it to receive future updates: 

https://github.com/telerik/kendo-angular/issues/3535

The issue only applies if you are passing hierarchical data to the TreeView component. Having both filtering and drag&drop options by using the built-in directives is indeed possible if flat data is passed to the component. Please see the example below: 

https://stackblitz.com/edit/angular-saewxn-ayxrgi 

On the other hand, if passing hierarchical data to the TreeView component, the developer can implement manual filtering logic by binding to the filterChange event and still use the directives responsible for the drag&drop. Please see our manual filtering example for further reference and the below code example demonstrating a possible implementation of this approach: 

https://stackblitz.com/edit/angular-vybqpu-574umq 

I hope this helps.

Regards,
Veselin
Progress Telerik