Bug report

When using a custom cell editor in the Spreadsheet along with keyboard navigation value selection is not limited to the cell with the custom cell editor

Reproduction of the problem

1. Run the Custom Editors Demo
2. Click on cell B2 and open the list popup with available values for selection
3. Press the right arrow key on the keyboard
4. Select a value from the list
5. The selected value will be applied to cell C2

Current behavior

The selected value is applied to cell other then the one using the custom cell editor

Expected/desired behavior

The selected value should be applied only to the cell with the custom cell editor

Environment

• Kendo UI version: 2020.2.617
• Browser: [all]