QML Filedialog Translation

ihmc

Hi, I am using QtQuick to develop a small MS Windows application that allows dynamic translation, e.g. en, fr, de.
In translation, it is fine with the custom .qml files with the .ts. However, when using FileDialog, no matter how I installed the QTranslator with the qt_.qm, qtbase_.qm ...etc. it is not translated. The UI is translated but the FileDialog does not. I have to change the system locale and reboot the machine and QTranslator is not necessary at this time.

I tried to use QFileDialog (the QtWidget), the content can be changed with the QTranslator with qt_*.qm files.

Is it a bug in Qt ?

My setup:
-Qt 5.14
-Windows 10
-MSVC 2017

main.cpp

...
    QString locale = "fr";// QLocale::system().name();
    QTranslator translator;
    if ( translator.load(QString("qt_") + locale)){
        app.installTranslator(&translator);
    }else{
        return -1;
    }
    QTranslator qtBaseTranslator;
    if (qtBaseTranslator.load("qtbase_" + locale)){
        app.installTranslator(&qtBaseTranslator);
    }else{
        return -1;
    }
...

main.qml

import QtQuick 2.14
import QtQuick.Window 2.14
import QtQuick.Controls 2.13
import QtGraphicalEffects 1.0
import QtQuick.Dialogs 1.3

Window  {
    id: window
    visible: true
    width: 1280
    height: 720
    color: "yellow"
    title: qsTr("Hello World!")
...

                  FileDialog {
                        id: fileDialog
                        title: qsTr("Please choose a file")
                        folder: shortcuts.desktop
                        selectMultiple: true
                        nameFilters: ["All (*)"]
                        onAccepted: {
                            console.log("GG")
                        }
                        onRejected: {
                            console.log("gg")
                        }
                    }
...