Hi Will,
Thank you for your patience,
We have tried to achieve your requirement in more possible ways in our “SfDataGrid” control, but we couldn’t able achieve your requirement of row get extended when an overflow of line on the editor at run time. We are checking the same requirement with our SfListview Control and we will further validate and let you the details on September 6th, 2019.
Regards,
Balasubramani Sundaram.