Product:

Telerik UI for ASP.NET Core (Grid)
Component: Grid Popup Editing
Version: 2026.2.520

Description:

I am experiencing an inconsistent focus behavior when using a Kendo Grid configured with Popup Editing.
After opening the popup editor and closing it using the Window close button (X), a Grid cell remains visually focused. The focused cell contains the CSS class k-focus.
The visual outline disappears immediately if the k-focus class is manually removed:

$(".k-focus").removeClass("k-focus");

However, removing the browser focus with:

document.activeElement?.blur();

does not remove the visual outline, which suggests that the issue is related to the Grid's internal focus state rather than the actual DOM focus.

Environment :

Telerik UI for ASP.NET Core
Kendo UI version: 2026.2.520
Popup editing mode
Grid is not configured with .Navigatable()
Reproduced in Edge Chromium

Actual Behavior:

Open a Grid popup editor.
Close the popup using the Window close button (X).
A Grid cell keeps the k-focus CSS class.
The focus outline remains visible.
Expected Behavior

Where Navigatable is not set (false), losing the popup using the Window close button should clean up the Grid focus state, or behave consistently with other popup closing mechanisms.

Bug report

When the Grid has groupable and navigatable configured but only one of them is enabled a title ‘Press Ctrl + Space to group’ is displayed. However, the grouping will not be performed in this configurations.

Reproduction of the problem

1. Open the dojo examples: https://dojo.telerik.com/PNMJWOgS or https://dojo.telerik.com/OSsMArKk
2. Hover a column header

Current behavior

Title ‘Press Ctrl + Space to group’ is displayed

Expected/desired behavior

A relevant title should be displayed or no title, as Ctrl + Space will not apply grouping

Workaround - https://dojo.telerik.com/OSsMArKk/2

dataBound: function(){
    $('.k-table-thead th').attr('title', 'some text')
  },

Environment

• Kendo/Telerik version: 2026.3.811
• Browser: [all ]