If there are two sibling MouseAreas, QEvent::isAccepted() won't be properly set

If there are two sibling mouse areas stacked on top of each other and they both accept left mouse button press events, after forwarding the QMouseEvent to QQuickWindow, QEvent::isAccepted() will not return true.

import QtQuick

Rectangle {
    color: "red"

    MouseArea {
        anchors.fill: parent
        onPressed: (mouse) => {
            console.log("mouse area 1");
        }
    }

    MouseArea {
        anchors.fill: parent
        onPressed: (mouse) => {
            console.log("mouse area 2");
            mouse.accepted = true;
        }
    }
}

The attached demo shows the issue. It forwards a fake mouse button press event to the quick view and even though the second mouse area accepts the press event, event.isAccepted() returns false, which is unexpected.