Bug report

When multicolumn headers are configured in the Grid and exportSelectedToExcel method is used for exporting, a file is not always generated. The issue is reproducible when selectable is set to selectable: "multiple, cell" and cell from the first column of the multicolumn header is selected.

Reproduction of the problem

1, Open the Dojo
2. Select a single cell from the 'field1' column
3. Click the 'Export selected' button

Current behavior

No file is generated. If for example also a cell from another column is selected, then the Excel file is generated as expected

Expected/desired behavior

An Excel file should be generated as expected even if only a single cell is selected.

Environment

• Kendo UI version: 2021.2.616
• jQuery version: x.y
• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]