REG: Attached ToolTips shrink

import QtQuick 2.0
import QtQuick.Controls 2.0

ApplicationWindow {
    id: window
    objectName: "window"
    width: 1200
    height: 800
    title: "tooltip-issue"
    visible: true

    Component.onCompleted: {
        contentItem.parent.objectName = "applicationWindowRootItem"
        contentItem.objectName = "applicationWindowContentItem"
    }

    header: ToolBar {
        id: root
        objectName: "toolBar"

        Row {
            anchors.fill: parent

            ToolButton {
                id: canvasSizeToolButton
                objectName: "aButton"

                text: "A"
                width: 50
                height: 50

                ToolTip.text: qsTr("Short text")
                ToolTip.visible: hovered
            }

            ToolButton {
                id: imageSizeToolButton
                objectName: "bButton"

                text: "B"
                width: 50
                height: 50

                ToolTip.text: qsTr("This is some medium text")
                ToolTip.visible: hovered
            }

            ToolButton {
                id: cropToSelectionToolButton
                objectName: "cButton"

                text: "C"
                width: 50
                height: 50

                ToolTip.text: qsTr("This is some reaaaaaaaaally looooooooooooooong text")
                ToolTip.visible: hovered
            }
        }
    }
}