WebView rendered outside of ScrollViewer

[skendrot]

I'm submitting a...

• Bug report (I searched for similar issues and did not find one)

Current behavior

When a WebView is inside a ScrollViewer it renders outside of the ScrollViewer bounds when scrolling

Expected behavior

The WebView should be contained within the ScrollViewer

Minimal reproduction of the problem with instructions

Create a WPF application, Add the following to the MainPage

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="100"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <Rectangle Fill="Blue"/>
    <ScrollViewer Grid.Row="1">
        <StackPanel>
            <WPF:WebView Source="http://bing.com" Height="76"/>
            <Rectangle Height="1000" Fill="Red"/>
        </StackPanel>
    </ScrollViewer>
</Grid>

Scroll the ScrollViewer. This becomes an even bigger issue when you have multiple WebViews in the ScrollViewer

Environment

Nuget Package(s): 
Microsoft.Toolkit.Wpf.UI.Controls.WebView

Package Version(s): 
5.1.0

Windows 10 Build Number:
- [ ] Fall Creators Update (16299)
- [ ] April 2018 Update (17134)
- [ ] October 2018 Update (17763)
- [ ] Insider Build (build number: )

App min and target version:
- [x] .NET 4.6.2

Visual Studio 
- [x] 2017 (version: )

[skendrot]

This is also an issue at the bottom of the ScrollViewer

[julesx]

is this ever going to be fixed?