MudBlazor Data Grid show index with arrow when persist data

I'm using MudBlazor's Data Grid and I'm implementing a method to save the search, sort, and pagination status. When you leave the page and return, the table displays the last search, sort, and pagination you modified.

Everything works correctly except for part of the sorting.

When one of the columns is sorted, an arrow appears with a number next to it.

When I leave the page and return, everything displays the previous version as I modified it, with the arrow indicating the sort order, but the number is not displayed.

How can I get that number to appear?

My code is as follows

<MudDataGrid T="Model"             @ref="_grid"             LoadingProgressColor="Color.Primary"Virtualize="false"      ServerData="ServerDataFunc"             RowClick="HandleRowDoubleClick" MultiSelection="true"  CurrentPage="GridStateService.State.Page"RowsPerPage="GridStateService.State.PageSize"             Filterable="true"SortDefinitions="GridStateService.State.SortDefinitionsBind" @bind-SelectedItems="SelectedModel"> public class GridState<T> {        public int Page { get; set; } = 0;        public int PageSize { get; set; } = 10;        public string? SearchText { get; set; }         public ICollection<SortDefinition<T>>? SortDefinitions { get; set; }        public ICollection<IFilterDefinition<T>>? FilterDefinitions { get; set; }       public HashSet<T> SelectedItems { get; set; } = new();         public Dictionary<string, SortDefinition<T>> SortDefinitionsBind        {                get => SortDefinitions?.Where( x => !string.IsNullOrWhiteSpace( x.SortBy ) ).ToDictionary(x => x.SortBy, x => x) ?? new();       set {           SortDefinitions = value?.Values.ToList() ?? new List<SortDefinition<T>>();                   }     } }