Bug report

copySelectionToClipboard() throws an error when the Grid has hidden column/s

Also if false is passed to the method  - grid.copySelectionToClipboard(false); - not all  GUID columns are copied to the clipboard

Reproduction of the problem
Dojo: https://dojo.telerik.com/OpiBoDaH

Select a row/rows

Click on the Select and copy button

Expected/desired behavior
Error should not be present and copy to clipboard shall copy correct data

Environment
Kendo UI version: [all]
Browser: [all]