Sample code of fixing strange slider behivor with GestureService

MainPage.xaml

<phone:PhoneApplicationPage 
    x:Class="SliderWithGestureService.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:tookit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <!--LayoutRoot is the root grid where all page content is placed-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel contains the name of the application and page title-->
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="ApplicationTitle" Text="SLIDER WITH GS" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="Slider Test" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>

        <!--ContentPanel - place additional content here-->
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <StackPanel>
                <Slider Height="84" Name="strangeSlider" />
                <Slider Height="84" Name="fixedSlider" ManipulationStarted="disableGestures" ManipulationCompleted="restoreGestures" />
            </StackPanel>
            <Rectangle Width="100" Height="100" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="0" Name="rectangle1" Fill="Gray">
                <Rectangle.Projection>
                    <PlaneProjection>
                    </PlaneProjection>
                </Rectangle.Projection>
                <Rectangle.RenderTransform>
                    <TranslateTransform x:Name="transform">
                    </TranslateTransform>
                </Rectangle.RenderTransform>
                <tookit:GestureService.GestureListener>
                    <tookit:GestureListener DragDelta="GestureListener_DragDelta" />
                </tookit:GestureService.GestureListener>
            </Rectangle>
        </Grid>
    </Grid>
 
</phone:PhoneApplicationPage>