I am using the latest Radzen Blazor Studio v1.13.2. The previous version doesn't have such issue.
Below is the auto generated code.
<RadzenColumn SizeMD=12>
<RadzenDataGrid @ref="grid0" ColumnWidth="200px" AllowFiltering="true" FilterMode="FilterMode.Advanced" AllowPaging="true" AllowSorting="true" ShowPagingSummary="true" PageSizeOptions=@(new int[]{5, 10, 20, 30})
Data="@patients" TItem="MedicalDemo.Models.medical.Patient" RowSelect="@EditRow" >
<Columns>
<RadzenDataGridColumn TItem="MedicalDemo.Models.medical.Patient" Property="patient_id" Title="patientid">
</RadzenDataGridColumn>
<RadzenDataGridColumn TItem="MedicalDemo.Models.medical.Patient" Property="FirstName" Title="First Name">
</RadzenDataGridColumn>