Combobox SelectedValue = null DisplayMember not match

[sbeduc163com]

Describe the bug

When the initial value of SelectedValue is null, the combobox does not have any option selected

To Reproduce

[ObservableProperty]
public List _comboboxItmes = new List()
{
new (){Id = null, Name = "All"},
new (){Id = 1, Name = "OPTION1"},
new (){Id = 2, Name = "OPTION2"}
};
[ObservableProperty]
private int? _comboboxSelectedValue = null;

Expected behavior

No response

Avalonia version

11.3.12

OS

Windows

Additional context

No response

[timunie]

null is by desing nothing to select. I guess you will need to create your own Empty key.