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ArgumentNullException with GridColumn that contains NULL's in foreign key

The following GridColumn works in version 18.1.0.59. In version 18.2.0.44 it throws ArgumentNullException (see below). Some people have a NULL AddressId since an address has not been entered in yet. A foreign key should be able to be NULL. 

GridColumn Field=@nameof(PersonModel.AddressId) HeaderText="Address" Width="350" DataSource="@addresses" ForeignKeyField="Id" ForeignKeyValue="FullAddress"



ArgumentNullException: Value cannot be null. (Parameter 'source') System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) System.Linq.Enumerable.Count(IEnumerable source) Syncfusion.Blazor.Grids.Internal.RowModelGenerator.RefreshForeignKeyRow(Row row, object item) Syncfusion.Blazor.Grids.Internal.RowModelGenerator.GenerateRow(object item, int index) Syncfusion.Blazor.Grids.Internal.RowModelGenerator.GeneratorRows(IEnumerable data, int startIndex) Syncfusion.Blazor.Grids.Internal.GridContent.OnParametersSet() Microsoft.AspNetCore.Components.ComponentBase.CallOnParametersSetAsync()