Invalidate TextBox on PasswordChar change

src/Avalonia.Controls/Presenters/TextPresenter.cs

@@ -81,7 +81,7 @@ namespace Avalonia.Controls.Presenters
                 TextBlock.FontSizeProperty.Changed, TextBlock.FontStyleProperty.Changed, 
                 TextBlock.FontWeightProperty.Changed, TextBlock.FontFamilyProperty.Changed,
                 SelectionStartProperty.Changed, SelectionEndProperty.Changed,
-                SelectionForegroundBrushProperty.Changed
+                SelectionForegroundBrushProperty.Changed, PasswordCharProperty.Changed
             ).AddClassHandler<TextPresenter>((x, _) => x.InvalidateFormattedText());
 
             CaretIndexProperty.Changed.AddClassHandler<TextPresenter>((x, e) => x.CaretIndexChanged((int)e.NewValue));