Select Fix Tab Key (#518)

Author: mckaragoz

CodeBeam.MudBlazor.Extensions/Components/ListExtended/MudListExtended.razor.cs

@@ -948,7 +948,11 @@ protected internal async Task SearchBoxHandleKeyDownAsync(KeyboardEventArgs obj)
                     break;
                 case "Tab":
                     await Task.Delay(10);
-                    await ActiveFirstItem();
+                    if (MudSelectExtended != null)
+                    {
+                        await MudSelectExtended.CloseMenu();
+                        await MudSelectExtended.FocusAsync();
+                    }
                     StateHasChanged();
                     break;
             }