PointHandler goes inactive releasing mouse button when multiple pressed

// code placeholder
import QtQuick 2.8
import Qt.labs.handlers 1.0

Item {
width: 640
height: 480
Rectangle {
id: rect
width: 20
height: 20
radius: 10
color: "green"
x: handler.point.position.x
y: handler.point.position.y
}

Text {
id: text
anchors.top: rect.bottom
anchors.left: rect.right
text: "<" + handler.point.position.x + ", " + handler.point.position.y + "> " + handler.point.pressedButtons + " [" + handler.point.pressure + "]"
}

PointHandler {
id: handler
acceptedButtons: Qt.LeftButton | Qt.RightButton
}
}