viewAll ist broken with perspective camera

#include <QApplication>
#include <QCamera>
#include <QCameraLens>
#include <QDebug>
#include <QDiffuseSpecularMaterial>
#include <QFrame>
#include <QPushButton>
#include <QSphereMesh>
#include <Qt3DWindow>
#include <QTransform>
#include <QVBoxLayout>
#include <QWidget>

int main(int argc, char* argv[])
{
	QApplication a(argc, argv);

	auto view = new Qt3DExtras::Qt3DWindow();

	auto rootEntity = new Qt3DCore::QEntity();
	view->setRootEntity(rootEntity);

	auto camera = view->camera();
	camera->lens()->setPerspectiveProjection(45.0f, 1., 0.1f, 10000.0f);
	camera->setPosition(QVector3D(0, 2, 0));
	camera->setUpVector(QVector3D(0, 1, 0));
	camera->setViewCenter(QVector3D(0, 0, 0));

	auto sphere = new Qt3DCore::QEntity();
	sphere->addComponent(new Qt3DExtras::QSphereMesh);
	sphere->addComponent(new Qt3DExtras::QDiffuseSpecularMaterial);
	sphere->setParent(rootEntity);

	auto container = QWidget::createWindowContainer(view);
	QFrame frame;
	frame.setLayout(new QVBoxLayout);
	frame.layout()->addWidget(container);
	frame.resize(QSize(400, 300));
	auto btnViewAll = new QPushButton("View All");
	frame.layout()->addWidget(btnViewAll);
	auto btnSetViewSphere = new QPushButton("Set View Sphere");
	frame.layout()->addWidget(btnSetViewSphere);

	QObject::connect(btnViewAll, &QPushButton::clicked, [&]() {
		camera->viewAll();
	});

	QObject::connect(btnSetViewSphere, &QPushButton::clicked, [&]() {
		camera->viewSphere(QVector3D(0, 0, 0), 1);
	});

	frame.show();
	return a.exec();
}