QQmlApplicationEngine::retranslate doesn't work for binding text

Hi ,

I create two translation files , English and Chinese file and use retranslate to change language dynamically.

Here is simple code

Rectangle {
    width: 100
    height: 100
    color: "yellow"

    property bool showText: false
    Text {
        text: parent.showText ? qsTr("text") : qsTr("no")
    }
    MouseArea {
        anchors.fill: parent
        onClicked: {
            parent.showText = !parent.showText
        }
    }
}

 
Firstly I load my project in Chinese , then I change language to English .
I find when I call retranslate to chang language , the text will be translated to English correctly.
but when I change the property showText from false to true , it will show Chinese again.