Hi Igor,

Thank you for your report.

After investigating the behavior, I can confirm that this is an issue with how the Grid handles column group state restoration. When the Grid state is saved and loaded, column groups do not restore their reordered position; instead, they receive an incorrect order index, while child columns restore correctly.

For this reason, I logged a related bug report in our public GitHub repository:

• https://github.com/telerik/kendo-angular/issues/4972

You can track the progress of the fix implementation either in the above GitHub issue or here in the related Feedback Portal item. As a small token of gratitude for reporting this behavior, I updated your Telerik points.

In the meantime, until this issue is fixed, the developer can manually track and restore column group order by:

1. Saving column group positions separately when saving the Grid state
2. Reordering column groups programmatically after calling loadState()

Here is the StackBlitz example from your reply, updated with the above workaround:

• https://stackblitz.com/edit/angular-2nwrn7db-1mycatg7

We apologize for any inconvenience the mentioned bug might have caused on your side.

Regards,
Zornitsa
Progress Telerik