The dialog box does not change its size

[pulsarbf]

Today I decided to get to know Avalonia. I started reading the documentation and I got to the Samples & Tutorials/Music Store App section and changing the code in it a bit. When I got to the point where I opened a new dialog window, I came across an error..

With such an axaml file, the dialog window created appears with the size of the main window, which has an extension of 1000x450.:

Window xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="200" d:DesignHeight="200" x:Class="MusicStore.Views.MusicStoreWindow" Title="MusicStoreWindow" TransparencyLevelHint="AcrylicBlur" ExtendClientAreaToDecorationsHint="True" WindowStartupLocation="CenterOwner">

<Panel>
    <ExperimentalAcrylicBorder IsHitTestVisible="False">
        <ExperimentalAcrylicBorder.Material>
            <ExperimentalAcrylicMaterial
                BackgroundSource="Digger"
                TintColor="Black"
                TintOpacity="1.8"
                MaterialOpacity="0" />
        </ExperimentalAcrylicBorder.Material>
    </ExperimentalAcrylicBorder>
</Panel>

by adding width and height attributes to the window, the window appears with the desired size

<Window... Width="200" Height="200""

why when I change the line: t

mc:Ignorable="d" d:DesignWidth="200" d:DesignHeight="200"

the window does not change its size?

Could the error be hidden in other files?
(I followed the documentation and didn't change the code much)

I will be glad if you tell me why this is happening!