[[qanda:topic_unsolved]] Access violation in QQuickWebEngineViewPrivate::initializeProfile()

I'm working on a project using Qt 5.12.8 to embed the WebEngineView. If I embed the WebEngineView in a simple qml file and run only test part 1 things are working fine. However, if I run both test part 1 & test part 2 in sequence I get an access violation in QQuickWebEngineViewPrivate::initializeProfile().

Test case using gtest framework

TEST( QuickControlsLoadTest, DialogWebViewRaw )
{
	QUrl dirOfControls( "qml/DialogWebViewRaw.qml" );

	{
                // Test part 1
		QCoreApplication::setOrganizationName( "Example" );
		QApplication::setAttribute( Qt::AA_ShareOpenGLContexts ); // For WebView needed
		QCoreApplication::setAttribute( Qt::AA_EnableHighDpiScaling );
		int          m_argc( 1 );
		char*        m_argv[1];
		m_argv[0] = "";
		QApplication app( m_argc, m_argv );

		QtWebEngine::initialize();

		QQmlApplicationEngine appEngine;
		appEngine.load( dirOfControls );
		//app.exec();
	}
	{
                // Test part 2
		QCoreApplication::setOrganizationName( "Example" );
		QApplication::setAttribute( Qt::AA_ShareOpenGLContexts ); // For WebView needed
		QCoreApplication::setAttribute( Qt::AA_EnableHighDpiScaling );
		int          m_argc( 1 );
		char*        m_argv[1];
		m_argv[0] = "";
		QApplication app( m_argc, m_argv );

		QtWebEngine::initialize();

		QQmlApplicationEngine appEngine;
		appEngine.load( dirOfControls );
		//app.exec();
	}
}

DialogWebViewRaw.qml contains the following code

import QtQuick 2.11
import QtQuick.Window 2.2
import QtQuick.Controls 2.4
import QtQuick.Layouts 1.11
import QtWebEngine 1.1

ApplicationWindow {
	id: window
	title: "Web View"

	ColumnLayout {

		WebEngineView {
			id: webView
			//url: 'https://www.google.com/'
			Layout.fillHeight: true
			Layout.fillWidth: true
		}
	}
}

Call stack of access violation

Qt5WebEngined.dll!QQuickWebEngineViewPrivate::initializeProfile() Line 181	C++
Qt5WebEngined.dll!QQuickWebEngineView::componentComplete() Line 2092	C++
Qt5Qmld.dll!QQmlObjectCreator::finalize(QQmlInstantiationInterrupt & interrupt) Line 1375	C++
Qt5Qmld.dll!QQmlComponentPrivate::complete(QQmlEnginePrivate * enginePriv, QQmlComponentPrivate::ConstructionState * state) Line 937	C++
Qt5Qmld.dll!QQmlComponentPrivate::completeCreate() Line 972	C++
Qt5Qmld.dll!QQmlComponent::completeCreate() Line 964	C++
Qt5Qmld.dll!QQmlComponent::create(QQmlContext * context) Line 798	C++
Qt5Qmld.dll!QQmlApplicationEnginePrivate::finishLoad(QQmlComponent * c) Line 136	C++
Qt5Qmld.dll!QQmlApplicationEnginePrivate::startLoad(const QUrl & url, const QByteArray & data, bool dataFlag) Line 121	C++
Qt5Qmld.dll!QQmlApplicationEngine::load(const QUrl & url) Line 266	C++
QuickTests.exe!QuickControlsLoadTest_DialogWebViewRaw_Test::TestBody() Line 98	C++

Why I get this access violation? Is the WebEngineProfile deleted after execution of part 1 of test case above?
I know the test doesn't makes much sense at all but I wonder why I get the error.

I appreciate any help.