WindowChrome's impact on layout

[Lizhengbo0304]

When the window uses WindowChrome, when the window size is modified from the TOP and LEFT directions of the window, FlyleafHost will be misaligned. Delete this code and there will be no problem. I modified your sample code and the effect is as follows:

<Window
    Background="Black"
    Height="1080"
    ResizeMode="CanResizeWithGrip"
    Title="Flyleaf MultiPlayer"
    Width="1920"
    mc:Ignorable="d"
    x:Class="FlyleafMultiPlayer__WPF_.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:flwpf="clr-namespace:FlyleafLib.Controls.WPF;assembly=FlyleafLib.Controls.WPF"
    xmlns:local="clr-namespace:FlyleafMultiPlayer__WPF_"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <WindowChrome.WindowChrome>
        <WindowChrome CaptionHeight="40" GlassFrameThickness="-1" />
    </WindowChrome.WindowChrome>
    <Window.Resources>
        <ResourceDictionary Source="FlyleafMEOverride.xaml" />
    </Window.Resources>
    <Grid x:Name="MultiPlayer">
        <Grid.ColumnDefinitions>
            <ColumnDefinition MinWidth="500" Width="Auto" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" MinHeight="500" />
            <RowDefinition />
        </Grid.RowDefinitions>
        <Border
            Background="Aqua"
            Grid.Column="0"
            Grid.Row="0"
            Margin="20" />
        <flwpf:FlyleafME
            Grid.Column="0"
            Grid.Row="0"
            Margin="20"
            Player="{Binding PlayerView1, Mode=TwoWay}"
            x:Name="FlyleafME1" />

        <Border
            Background="Red"
            Grid.Column="1"
            Grid.Row="0"
            Margin="20" />
        <flwpf:FlyleafME
            Grid.Column="1"
            Grid.Row="0"
            Margin="20"
            Player="{Binding PlayerView2, Mode=TwoWay}" />

        <Border
            Background="Aquamarine"
            Grid.Column="1"
            Grid.Row="1"
            Margin="20" />
        <flwpf:FlyleafME
            Grid.Column="1"
            Grid.Row="1"
            Margin="20"
            Player="{Binding PlayerView3, Mode=TwoWay}" />

        <Border
            Background="Coral"
            Grid.Column="0"
            Grid.Row="1"
            Margin="20" />
        <flwpf:FlyleafME
            Grid.Column="0"
            Grid.Row="1"
            Margin="20"
            Player="{Binding PlayerView4, Mode=TwoWay}" />

    </Grid>
</Window>