Material ToolTip quickly disappears when hovering from one control to another

import QtQuick 2.7
import QtQuick.Window 2.2
import QtQuick.Layouts 1.1
import QtQuick.Controls 2.0

Window {
    visible: true
    width: 300
    height: 200
    title: qsTr("Hello World")

    ColumnLayout {
        anchors.centerIn: parent

        RowLayout {
            Layout.fillWidth: true

            Label {
                text: qsTr("Tile Width")
                Layout.fillWidth: true
            }
            SpinBox {
                from: 1
                value: 32
                editable: true
                hoverEnabled: true

                ToolTip.text: qsTr("How wide each tile is in pixels")
                ToolTip.visible: hovered
            }
        }

        RowLayout {
            Label {
                text: qsTr("Tile Height")
                Layout.fillWidth: true
            }
            SpinBox {
                from: 1
                value: 32
                editable: true
                hoverEnabled: true

                Layout.alignment: Qt.AlignRight

                ToolTip.text: qsTr("How high each tile is in pixels")
                ToolTip.visible: hovered
            }
        }

        RowLayout {
            Label {
                text: qsTr("Blah Blah")
                Layout.fillWidth: true
            }
            SpinBox {
                from: 1
                value: 32
                editable: true
                hoverEnabled: true

                Layout.alignment: Qt.AlignRight

                ToolTip.text: qsTr("How blah each blah is in blahs")
                ToolTip.visible: hovered
            }
        }
    }
}