FileDialog can't select read-only file

import QtQuick 2.0
import QtQuick.Dialogs 1.0

FileDialog {
   id: dialog
   Component.onCompleted: open()
}

When I try to open file in read-only mode it shows

readonly.txt
This file is set to read-only.
Try again with a different file name.
[OK]

and doesn't accept selection.

The problem is in /qtdeclarative/src/imports/dialogs/qquickabstractfiledialog.cpp
Ctor sets m_selectExisting to true but m_options->fileMode() is AnyFile by default. But according QQuickAbstractFileDialog::updateModes() it shoud be ExistingFiles.

Please add updateModes() call to ctor to fix this issue.

import QtQuick 2.0
import QtQuick.Dialogs 1.0

FileDialog {
   id: dialog
   Component.onCompleted: {
       // Blink property to cause updateModes() call
       selectExisting = false;
       selectExisting = true;
       open();
   }
}