I made research about Kendo Spreadsheet control and I found some of unlogical things in example:
1. When I made changes (kendoSpreadsheetCancelChanges.png) in spreadsheet and click on CANCEL CHANGES button, all of these changes aren't removed.
2. Manually reading spreadsheet datasource, all of these changes aren't removed. For example, when I type in console
$("#spreadsheet").data("kendoSpreadsheet").options.sheets.dataSource.read();, datasource is reading, but almost all changes are shown. Why?