WPF - OnLostMouseCapture with active scrolling.

What version of the product are you using? v85.3.130
What architecture x86 or x64? Both
On what operating system? Win10
Are you using WinForms, WPF or OffScreen? WPF
What steps will reproduce the problem? 1)Draging the scrollbar with left button pressing 2)move the cursor out of the browser control 2)press alt+tab, choose other app. 3)release left button. 4)move mouse in browser, browser is thinking that mouse is pressed.

Please provide any additional information below. As i said in https://github.com/cefsharp/CefSharp/pull/2871 we have problem with OnLostMouseCapture. Default wpf implementation does not raise mouse up event after lost mouse capture.

Worked fast fix(SubClass):

    private bool isLeftMouseDown;
    protected override void OnMouseDown(MouseButtonEventArgs e)
    {
        isLeftMouseDown = e.LeftButton == MouseButtonState.Pressed;
        base.OnMouseDown(e);
    }

    protected override void OnLostMouseCapture(MouseEventArgs e)
    {
        var modifiers = e.GetModifiers();
        var point = e.GetPosition(this);

        if (isLeftMouseDown)
        {
            GetBrowser().GetHost().SendMouseClickEvent((int)point.X, (int)point.Y, MouseButtonType.Left, true, 1, modifiers);
            isLeftMouseDown = false;
        }

        base.OnLostMouseCapture(e);
    }

cefsharp / CefSharp

WPF - OnLostMouseCapture with active scrolling. #3268