Problem with Window.SizeToContent = SizeToContent.WidthAndHeight

Hello,

I had made the following window.

• SizeToContent="WidthAndHeight"
• Contains DockSite.AutoHideBottomContainers

I had encountered the following issues.

• When click "Tool1", tool window will be poped up, but main window's width become screen width.
  
  • After pinned the tool window, main window's width become original width.
• Make tool window pinned. When switch Tool1 <--> Tool2, main window' height is changed.
  • When make Tool1's height smaller,  main window's height become smaller.

Would you please check it?

Regarding to 1st issue, it was solved by specify `DockSite.UseHostedPopups="False"`.

However, I don't want to use this because initialize process of internal control was not executed properly.

<Window
    x:Class="WpfApp36.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:docking="http://schemas.actiprosoftware.com/winfx/xaml/docking"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    Title="MainWindow"
    ResizeMode="NoResize"
    SizeToContent="WidthAndHeight"
    mc:Ignorable="d">
    <Grid>
        <docking:DockSite>
            <docking:DockSite.AutoHideBottomContainers>
                <docking:ToolWindowContainer>
                    <docking:ToolWindow Title="Tool1">
                        <StackPanel>
                            <Label Content="Tool1" />
                            <Button Height="50" Content="Button1" />
                        </StackPanel>
                    </docking:ToolWindow>
                    <docking:ToolWindow Title="Tool2">
                        <StackPanel>
                            <Label Content="Tool2" />
                            <Button Content="Button2" />
                        </StackPanel>
                    </docking:ToolWindow>
                </docking:ToolWindowContainer>
            </docking:DockSite.AutoHideBottomContainers>

            <docking:SplitContainer>
                <docking:Workspace>
                    <docking:ToolWindow
                        Title="Fixed"
                        CanAttach="False"
                        CanDragTab="False"
                        HasTitleBar="False">
                        <StackPanel Margin="8" Orientation="Vertical">
                            <Label Content="Main Area" />
                            <StackPanel Margin="0,16,0,0" Orientation="Horizontal">
                                <Label Content="Name: " />
                                <TextBox Width="300" Margin="0,8,0,0" />
                            </StackPanel>
                            <StackPanel Margin="0,16,0,0" Orientation="Horizontal">
                                <Label Content="Age: " />
                                <TextBox Width="300" Margin="0,8,0,0" />
                            </StackPanel>
                            <StackPanel Margin="0,16,0,0" Orientation="Horizontal">
                                <Label Content="Address: " />
                                <TextBox Width="300" Margin="0,8,0,0" />
                            </StackPanel>
                            <Button
                                Width="100"
                                Margin="0,16,0,0"
                                HorizontalAlignment="Right"
                                Content="Apply" />
                        </StackPanel>
                    </docking:ToolWindow>
                </docking:Workspace>
            </docking:SplitContainer>
        </docking:DockSite>
    </Grid>
</Window>

Best regards,