eo_support wrote:Thanks for posting in the forum. Can you post a test XAML so that we can take a look here?
 Checked the webcontrol with 
http://www.yahoo.com, my screen resolution is 1920*1080.
Here is the xaml
<Window x:Class="WpfApplicationBrowserTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"  xmlns:eo="http://schemas.essentialobjects.com/wpf/" Loaded="Window_Loaded" WindowState="Maximized" >
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <eo:WebControl HorizontalAlignment="Stretch"  Name="webControl1" VerticalAlignment="Stretch"    >            
        </eo:WebControl>
    </Grid>
</Window>
and the c# 
private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            //this.Visibility = System.Windows.Visibility.Hidden;
            webControl1.WebView.LoadUrl("http://www.yahoo.com");
            webControl1.WebView.LoadComplete += new EO.WebBrowser.NavigationTaskEventHandler(WebView_LoadComplete);
            webControl1.WebView.DownloadCompleted += new EO.WebBrowser.DownloadEventHandler(WebView_DownloadCompleted);
        }