Hi Alessandro Degola,
Greetings from Syncfusion Support.
Based on your query you are facing some error when choosing the empty column. So, before we proceed with your query we need the following details,
1. Share the complete Grid rendering code.
2. Share the issue replication procedure.
3. Share the video demonstration of an issue.
4. Share the Syncfusion Package Version.
Regards,
Shalini M