Bug report

When the first column in the Grid is hidden and the Grid is grouped, the hidden cells are focused when the user tries to navigate using the keyboard.

Reproduction of the problem

1. Open the Dojo - https://dojo.telerik.com/TsDxOwAj
2. Click on the 'store_name' header.
3. Press the down arrow key twice -> focus frame disappears (the hidden cell on the left receives a focus state, but this is not visible).
4. With the keyboard press the up arrow one time -> "Hidden column used for grouping: 1" cell is highlighted.
5. With the keyboard press the up arrow, one more time, and -> focus disappears (actually, the hidden column cell on the top left corner receives the focus state, but this is not visible).

Current behavior

The hidden column receives the focus, thus the focus is hidden when the user navigates and the next cell is part of the hidden column.

Expected/desired behavior

The focus should not disappear when there are hidden columns.

The issue is a regression starting with Kendo version 2023.3.1010.

Environment

• Kendo UI version: 2024.3.806
• jQuery version: x.y
• Browser: [all ]