Memory problem using UrhoSharp in WPF application

Hi, I have a WPF application with different pages that the user switches between. One of these pages should show an UhroSharp application. This contains a custom geometry and displays a point cloud.
The display works great, but there is a memory leak somewhere. Every time I switch to another page and go back to the Urho application, the memory footprint of my application increases. What I also noticed, on the second visit to the page the show function is called twice, on the third visit three times and so on.
I have tried not to destroy the Urho application, however, when I go to the page the second time, I am only shown a black screen.
How do I exit the application cleanly and restart it?
My code is very simple:

using UrhoSharpWpfExtension = UrhoExtensionsWpf::Urho.Extensions.Wpf;
using UrhoSharp = UrhoSharpGlobal::Urho;

public partial class UrhoWrapperWpf : UserControl
{
private UrhoSharpWpfExtension.UrhoSurface _urhoSurface;
SceneView _urhoApp;

    public UrhoWrapperWpf()
    {
        InitializeComponent();
        _urhoSurface = new UrhoSharpWpfExtension.UrhoSurface()
        {
            HorizontalAlignment = HorizontalAlignment.Stretch,
            VerticalAlignment = VerticalAlignment.Stretch
        };
        Content = _urhoSurface;
        Unloaded += UrhoWrapperWpf_Unloaded;
    }

    private void UrhoWrapperWpf_Unloaded(object sender, RoutedEventArgs e)
    {
        if (_urhoApp?.IsActive == true)
            _urhoSurface.Stop();
        Unloaded -= UrhoWrapperWpf_Unloaded;
    }

    public void ShowPoints(float[] data)
    {
        if (_urhoApp?.IsActive == true)
        {
            UrhoSharp.Application.InvokeOnMain(() =>
							{
            try
            {
                _urhoApp.ShowPoints(data);
            }
            catch
            {
            }
        });
        }
    }

    public Task<Unit> StartUrhoApp()
    {
        var appOpt = new UrhoSharp.ApplicationOptions(assetsFolder: null)
        {
            Orientation = UrhoSharp.ApplicationOptions.OrientationType.LandscapeAndPortrait,
            UseDirectX11 = true,
            TouchEmulation = true,
            LimitFps = true,
            DelayedStart = true,
            AdditionalFlags = "-q",
            ResourcePrefixPaths = new string[0],
        };

        try
        {
            _urhoApp = await _urhoSurface.Show<SceneView>(appOpt);
        }
        catch (Exception e)
        {
            Console.WriteLine(e);
            //ToDo log exception
        }

        return Task.FromResult(Unit.Default);
    }

    public Task<Unit> StopUrhoApp()
    {
        return Task.FromResult(Unit.Default);
    }

}

The Stop Method in SceneView looks like this:

protected override void Stop()
{
base.Stop();
SizeBuffers(0);
scene.RemoveAllChildren();
CameraNode.RemoveAllChildren();
CameraNode.Remove();
Dispose();
Task.Delay(25);
vertexData = null;
indexData = null;
}

I use UrhoSharp and UrhoSharp.Wpf v1.9.67

I still found this link, could it have something to do with this?
https://github.com/xamarin/urho/issues/311

Thank you for your help!

We have nothing to do with UrhoSharp, use Xamarin forum