Tested on:
Ubuntu 16.04.4 LTS, gcc 5.4.0
Qt from online installer

While running maps example on Ubuntu - just after launching the example crashes.

Singal Received:
Signal name: SIGSEGV
Signal meaninging: Segmentation fault

Call stack:
1 QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::createLayer render_widget_host_view_qt_delegate_widget.cpp 302 0x7ffff7bc3034
2 QtWebEngineCore::DelegatedFrameNode::commit delegated_frame_node.cpp 670 0x7fffeede9fd5
3 QtWebEngineCore::Compositor::updatePaintNode compositor.cpp 134 0x7fffeeddb2ed
4 QQuickWindowPrivate::updateDirtyNode qquickwindow.cpp 3532 0x7fffee0ee470
5 QQuickWindowPrivate::updateDirtyNodes qquickwindow.cpp 3277 0x7fffee0eeaad
6 QQuickWindowPrivate::syncSceneGraph qquickwindow.cpp 437 0x7fffee0efc52
7 QQuickRenderControl::sync qquickrendercontrol.cpp 286 0x7fffee1abca9
8 QQuickWidgetPrivate::render qquickwidget.cpp 297 0x7fffec0ed240
9 QQuickWidgetPrivate::renderSceneGraph qquickwidget.cpp 351 0x7fffec0ed2fe
10 QObject::event qobject.cpp 1282 0x7ffff6e3f41b
11 QWidget::event qwidget.cpp 9395 0x7ffff74debb3
12 QQuickWidget::event qquickwidget.cpp 1535 0x7fffec0f0dfb
13 QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::event render_widget_host_view_qt_delegate_widget.cpp 482 0x7ffff7bc3688
14 QApplicationPrivate::notify_helper qapplication.cpp 3703 0x7ffff749ff6c
15 QApplication::notify qapplication.cpp 3449 0x7ffff74a7120
16 QCoreApplication::notifyInternal2 qcoreapplication.cpp 1095 0x7ffff6e117a8
17 QCoreApplication::sendEvent qcoreapplication.cpp 1490 0x7ffff6e1195e
18 QTimerInfoList::activateTimers qtimerinfo_unix.cpp 643 0x7ffff6e68f19
19 timerSourceDispatch qeventdispatcher_glib.cpp 183 0x7ffff6e696f1
20 g_main_context_dispatch 0x7fffe8f97417
21 ?? 0x7fffe8f97650
22 g_main_context_iteration 0x7fffe8f976dc
23 QEventDispatcherGlib::processEvents qeventdispatcher_glib.cpp 423 0x7ffff6e69a5f
24 QEventLoop::exec qeventloop.cpp 225 0x7ffff6e10162
25 QCoreApplication::exec qcoreapplication.cpp 1403 0x7ffff6e18b60
26 main main.cpp 64 0x5555555573d4