Hi Paul,
Thank you for contacting Syncfusion support.
Based on the provided information, we suspect that you have modified the sample code with the empty space in the Xaml file, so that the issue may occurs. Can you replace the following code and check,
We have checked our DataGrid SampleBrowser working fine without any issue from our end. Can you please confirm whether you made any related changes from your side and let us know with more details if you still face issue? We will check and help you with that.
Regards,
Subburaj Pandian V