Keyboard does not work in browser on Mac.

I think this is serious issue (if it is not my fault) - this is basic functionality.

http://playground.sun.com/~vasya/GoldenRed.html

I check JFXC-893, it is old and fixed, so I assume this is different issue.

This is part of code doing events:

Stage {
    title: "GoldenRed"
    width: 800
    height: 320
    scene: Scene {
        content: [
            Rectangle {
                fill: Color.rgb(205, 225, 255);
                width: 800
                height: 160
            }
            Rectangle {
                y: 160
                fill: Color.rgb(150, 150, 130);
                width: 800
                height: 80
            }
            Rectangle {
                y: 240
                fill: Color.rgb(100, 100, 100);
                width: 800
                height: 80
            }
            gameFieldView
            Rectangle {
                opacity: 0
                focusable: true
                fill: Color.rgb(100, 100, 100)
                width: 800
                height: 350
                onKeyPressed: function(ke: KeyEvent){
                    if (ke.text == "Right") {
                        walkForwardTimer.play();
                    } else if (ke.text == "Left") {
                        walkBackwardTimer.play();
                    } else if (ke.text == "Space") {
                        hit();
                    }
                }
                onMousePressed: function(me: MouseEvent){
                    hit();
                }
            }
        ]
    }
}

It has initial keyboard handling on Windows Firefox, Chrome. But lose it after changing focus (after I switch window and go back.