Material TextField placeholder slot left blank after clearing text programmatically

import QtQuick
import QtQuick.Window
import QtQuick.Controls.Material
Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")
    Column{
        anchors.top:parent.top
        anchors.topMargin:10
        TextField{
            id:textField
            placeholderText:"Placeholder"
            text:"hello"
        }
        Button{
            text:"clear text"
            onClicked:textField.clear()
        }
    }
}