Hi Pietro,
Greetings from syncfusion.
We have made API breaking changes in 2021 Volume 1 release. As per the new API paradigm, we are getting the widgets directly from users. Due to this, SfDataGrid does not have support for autofit (width and height) for the column.
Please refer to the following blog for API breaking changes,
We have already considered the autofit for the row and column feature and logged the feature request. This feature will be implemented in our any of our upcoming release.
Please refer to the below feedback link for further follow up,
We appreciate your patience until then. For further assistance, you can follow provided feedback link.
Regards,
Renuga devi