Cannot select a recently added item to MudTreeView

I'm trying to add an item to a MudTreeView control and inmediatley after select it.

The control has this property

@bind-SelectedValue="SelectedItem"

and in my code I have

    string SelectedItem;    private void Add(){        var value = $"P{InitialTreeItems.Count}";        var treeItem = new TreeItemData<string> { Value = value, Icon = Icons.Material.Filled.Group};        InitialTreeItems.Add(treeItem);        SelectedItem = value;    }

but the item is not selected.

Strangely, selecting later is possible.

You can test in here: https://try.mudblazor.com/snippet/mYGfFQbeYvwUnHpG

The "Add" button will add items, but they are not selected, while the "Select Trash" one is selecting the item.

Thanks in advace?