Grid re-renders whole row when some cell go to edit mode

[Ultimeta]

TableBodyComponent.trackByFn causes whole row to be re-rendered, because before edit trackBy returns index of row and after edit trackBy returns data. In large grids with a lot of columns this may be slow. 

Currently i use this workaround to avoid such behavior - (<any>this.kendoGrid).editService.hasEdited = () => true;

[Daniel]

Hello,

The change was required because the FormControls do not remove the references from the old controls they were attached to. Thus keeping the same rows was causing the controls to be attached to multiple value accessors. We will consider exposing input for custom trackBy function.

Regards,
Daniel
Progress Telerik