WPF RichTextBox scrolling does not work if window is minimized

Question

I need the following scrolling behavior, but this only works, if the window is not minimized. Is there a solution that works, even if the window is minimized?

c#

private void richTextBox_TextChanged(object sender, TextChangedEventArgs e)
{
    if (richTextBox.VerticalOffset + richTextBox.ViewportHeight >= richTextBox.ExtentHeight)
    {
        richTextBox.ScrollToEnd();
    }
}

xaml

<Grid>
    <RichTextBox Name="richTextBox" IsReadOnly="True" VerticalScrollBarVisibility="Auto" TextChanged="richTextBox_TextChanged">
        <RichTextBox.Resources>
            <Style TargetType="{x:Type Paragraph}">
                <Setter Property="Margin" Value="0"/>
            </Style>
        </RichTextBox.Resources>
    </RichTextBox>
</Grid>

Answer 1

Call the ScrollToEnd also in the StateChanged event of the window. So it is done when the window returns from minimized state.