IsUserInitiated on navigation event does not work for backwards/forwards

Setup

• WPF application
• .Net 4.7.2
• 0.9.579-prerelease package for WebView
• Edge Dev installed

Problem

When a user navigates inside the browser we can subscribe to the NavigationStarted event which holds the property IsUserInitiated. When the user moves forwards/backwards in th browser this property is expected to be true, but this is not the case.

Code

I have created a minimum viable example which can reproduce the issue. Create a new WPF app with the following code:
MainWindow.xaml

<Window x:Class="TestWebView2App.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
        mc:Ignorable="d"
        Title="MainWindow" Height="800" Width="1000">
  
  <Grid>
    <Grid.RowDefinitions>
      <RowDefinition Height="*" />
      <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>

    <wv2:WebView2 Name="WebView"
                  Source="http://microsoft.com" />

    <ScrollViewer Height="150"
                  Grid.Row="1">
      <TextBox x:Name="WebViewEvents" 
               Text="*** EVENT OVERVIEW ***"
               Foreground="OrangeRed"
               Background="Black"
               IsReadOnly="True" />
    </ScrollViewer>

  </Grid>
</Window>

MainWindow.xaml.cs

using System;
using System.Windows;

namespace TestWebView2App
{
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();

      WebView.CoreWebView2Ready += WebView_CoreWebView2Ready;
    }

    private void WebView_CoreWebView2Ready(object sender, EventArgs e)
    {
      WebView.CoreWebView2.NavigationStarting += CoreWebView2_WebView_NavigationStarting;
    }

    private void CoreWebView2_WebView_NavigationStarting(object sender, Microsoft.Web.WebView2.Core.CoreWebView2NavigationStartingEventArgs e)
    {
      WebViewEvents.Text += Environment.NewLine + $"Navigation to '{e.Uri}', is from user: '{e.IsUserInitiated}'";
    }
  }
}

How to reproduce

1. Open the app
2. Press any link on the site
3. Go back using either Alt+Left, a dedicated mouse button or the contextmenu
4. Go forward again using the same measures
5. See in the event overview that IsUserInitiated is not correctly reported
   

AB#28898249

Start with the supplied MainWindow.xaml and MainWindow.xaml.cs minimum example, run it using the listed WebView2 package, and observe NavigationStarting during link navigation and back/forward actions. Trace how CoreWebView2NavigationStartingEventArgs.IsUserInitiated is populated; done means the event reports the expected value for user-triggered backwards and forwards navigation.