SplitView's handle not propagating mouse events

import QtQuick 2.15
import QtQuick.Controls 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    SplitView {
        anchors.fill: parent
        handle: Rectangle {
            color: "green"
            implicitWidth: 100

            Button {
                text: "Click Me"
                onClicked: console.log("clicked")
                anchors.horizontalCenter: parent.horizontalCenter
            }
        }

        Rectangle {
            SplitView.fillHeight: true
            SplitView.preferredWidth: 300
            color: "red"
        }

        Rectangle {
            SplitView.fillHeight: true
            SplitView.fillWidth: true
            color: "blue"
        }
    }
}