Describe the bug

When exporting the Kendo UI for Vue Native Grid data to a PDF file and the paper-size property is set to true, if there are locked columns inside the Grid, these columns are exported as empty columns.

• Workaround - a possible workaround is demonstrated in this StackBlitz example

To Reproduce

1. Open this StackBlitz example
2. Press the button above the Grid and save the exported file
3. Open the saved file and see how the locked columns have been exported

Expected behavior
All Grid columns should be correctly visualized in the exported PDF file, no matter if they are locked or unlocked.

Screenshots

Additional context
If we set the paper-size to a pre-defined value like 'A4', the issue is not replicable