System.MissingMethodException: Method not found

Question

On Windows 10 I'm developing a universal app. I have a project targeting from build 10240 to the Anniversary Edition(14393). I'm using the nuget Win2d.uwp and whilst developing the app in debug and release everything works fine. I can generate a Store package, deploy it through HockeyApp and it work just fine. When I upload it to the store, and wait until it has been approved, download it, and start to use it, as soon as I draw a shadow in some controls using Win2d.uwp and this code:

 public static void InitializeDropShadow(UIElement shadowHost, UIElement shadowTarget, Color color, ShadowPosition position)
    {
        var offset = GetOffset(position);

        var hostVisual = ElementCompositionPreview.GetElementVisual(shadowHost);
        var compositor = hostVisual.Compositor;

        // Create a drop shadow
        var dropShadow = compositor.CreateDropShadow();
        dropShadow.Color = Color.FromArgb(color.A, color.B, color.G, color.R);
        dropShadow.BlurRadius = 25.0f;
        dropShadow.Offset = offset;
        // Associate the shape of the shadow with the shape of the target element
        // dropShadow.Mask = shadowTarget.GetAlphaMask();

        // Create a Visual to hold the shadow
        var shadowVisual = compositor.CreateSpriteVisual();
        shadowVisual.Shadow = dropShadow;

        // Add the shadow as a child of the host in the visual tree
        ElementCompositionPreview.SetElementChildVisual(shadowHost, shadowVisual);

        // Make sure size of shadow host and shadow visual always stay in sync
        var bindSizeAnimation = compositor.CreateExpressionAnimation("hostVisual.Size");
        bindSizeAnimation.SetReferenceParameter("hostVisual", hostVisual);

        shadowVisual.StartAnimation("Size", bindSizeAnimation);
    }

    private static Vector3 GetOffset(ShadowPosition position)
    {
        var result = new Vector3();
        switch (position)
        {
            case ShadowPosition.Center:
                result = new Vector3(0, 0, 0);
                break;
            case ShadowPosition.Top:
                result = new Vector3(0, -SHADOW_OFFSET, 0);
                break;
            case ShadowPosition.Left:
                result = new Vector3(-SHADOW_OFFSET, 0, 0);
                break;
            case ShadowPosition.Right:
                result = new Vector3(SHADOW_OFFSET, 0, 0);
                break;
            case ShadowPosition.Bottom:
                result = new Vector3(0, SHADOW_OFFSET, 0);
                break;
            case ShadowPosition.TopLeft:
                result = new Vector3(-SHADOW_OFFSET, -SHADOW_OFFSET, 0);
                break;
            case ShadowPosition.BottomRight:
                result = new Vector3(SHADOW_OFFSET, SHADOW_OFFSET, 0);
                break;
            default:
                result = new Vector3(0, 0, 0);
                break;

        }
        return result;
    }

it breaks miserably and throw this exception breaking the whole app:

System.MissingMethodException: Method not found: 'Void Windows.UI.Composition.DropShadow.put_Offset(System.Numerics.Vector3)'.

It only happens from the STORE version and I'm not compiling it with .Net Native. Any Ideas?