Hi Chris,
Thanks for your patience.
Based on your shared information we have prepared and checked a sample as per your requirement with latest Syncfusion packages but we did reproduce the reported issue at our end. Please refer to the below sample.
If still facing the issue, please share below details then only we provide the appropriate solution as soon as possible.
1. If possible, share issue reproducing sample or reproduce the issue in above sample and revert to us
2. Share Syncfusion package version you used.
Note: For enabling the virtualization, the Grid should have more than 1000 records in its data source for better performance. So for few hundred rows it is not required and when there are more than 1000 records you can enable virtualization in the Grid.
Please get back to us, if you need any further assistance.
Regards,
Thiyagu S