Virtual keyboard does not copy or show wengineview input text

[vilvei]

What works: Virtual Keyboard in fullScreen mode enabled works with native qml TextInput as expected: it shows the text that was already in the field when input was focused and it shows the edited text.

What does not work: When input field seen in webengineview is focused (input field in web page) the virtual keyboard input field text is empty, and does not update when inputting text.

Question 1: Is this a bug, or is there a way to make it work?
Question 2: Is there a way to make virtual keyboard to show the inputted text without going to fullScreen mode?
This would be the best option in my opinion.

Image to demonstrate the situation:

Testing code:

import QtQuick 2.11
import QtQuick.Window 2.2
import QtQuick.VirtualKeyboard 2.3
import QtQuick.VirtualKeyboard.Settings 2.2
import QtWebEngine 1.7

Window {
    id: window
    visible: true
    width: 1280
    height: 768
    title: qsTr("Hello World")

    WebEngineView {
        id: webview
        anchors.fill: parent
        url: 'https://www.google.com'
    }

    Rectangle {
        height: 100
        width: window.width
        color: "#800000FF"
        TextInput {
            id: textfield
            anchors.fill: parent
            visible: true
            text: "Just some text"
            color: "white"
            font.pointSize: 50
        }
    }

    Component.onCompleted: {
        VirtualKeyboardSettings.fullScreenMode = true;
    }
}