Window is having a border after removing default appbar

Describe the bug

When I use UiWindow instead of Window, it shows two app bars, and to remove the default one, I used this line.
WindowStyle="None" what does remove the default app bar, but now the window has a border like this How can I remove it?

My Code
<ui:UiWindow x:Class="tes1.MainWindow" ....... WindowStyle="None" ResizeMode="CanResizeWithGrip" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:local="clr-namespace:PJ_Tools_tes1" mc:Ignorable="d" Title="MainWindow" Height="450" Width="800"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <!--<ui:NavigationView Grid.Row="1"/>--> </Grid> </ui:UiWindow>

To Reproduce

Use UIWindow instead of Window

Expected behavior

I was hopping UIWindow will override the default window and will also replace the default Appbar with UIAppbar

Screenshots

OS version

Edition: Windows 11 Pro
version: 22H2

.NET version

.Net 6

WPF-UI NuGet version

2.0.3

Additional context

No response

Start by reproducing the issue with the UiWindow XAML shown in the report, using WindowStyle="None" and ResizeMode="CanResizeWithGrip" on Windows 11. Compare the resulting border with a standard Window and determine how the custom app bar and window resizing should coexist; done means the default app bar is removed without leaving the unwanted border.