Random crashes with WebEngine

We are using WebEngineView to display various web content. Unfortunately we are seeing random crashes and are not able to find any consistent way to reproduce. Only hint to possibly get into this issue is the stack trace which seems look the same always.

Crash reason: EXC_BAD_ACCESS / KERN_INVALID_ADDRESS

0 QtWebEngineCore net::ClientSocketHandle::ResetInternal client_socket_handle.cc:46
1 QtWebEngineCore net::ClientSocketHandle::~ClientSocketHandle client_socket_handle.cc:32
2 QtWebEngineCore net::WebSocketBasicStream::~WebSocketBasicStream scoped_ptr.h:127
3 QtWebEngineCore net::WebSocketBasicStream::~WebSocketBasicStream websocket_basic_stream.cc:87
4 QtWebEngineCore net::WebSocketDeflateStream::~WebSocketDeflateStream scoped_ptr.h:127
5 QtWebEngineCore net::WebSocketChannel::~WebSocketChannel scoped_ptr.h:127
6 QtWebEngineCore net::WebSocketChannel::~WebSocketChannel websocket_channel.cc:319
7 QtWebEngineCore content::WebSocketHost::~WebSocketHost scoped_ptr.h:127
8 QtWebEngineCore content::WebSocketDispatcherHost::DeleteWebSocketHost websocket_dispatcher_host.cc:203
9 QtWebEngineCore content::WebSocketDispatcherHost::DoDropChannel websocket_dispatcher_host.cc:177
10 QtWebEngineCore content:: websocket_host.cc:205
11 QtWebEngineCore net::WebSocketChannel::OnReadDone websocket_channel.cc:1141
12 QtWebEngineCore base::internal::Invoker<2, base::internal::BindState<base::internal::RunnableAda bind_internal.h:248
13 QtWebEngineCore net::WebSocketDeflateStream::OnReadComplete callback.h:441
14 QtWebEngineCore base::internal::Invoker<3, base::internal::BindState<base::internal::RunnableAda bind_internal.h:310
15 QtWebEngineCore net::WebSocketBasicStream::OnReadComplete callback.h:441
16 QtWebEngineCore base::internal::Invoker<3, base::internal::BindState<base::internal::RunnableAda bind_internal.h:310
17 QtWebEngineCore net::SSLClientSocketOpenSSL::DoReadCallback callback.h:441
18 QtWebEngineCore net::SSLClientSocketOpenSSL::OnRecvComplete ssl_client_socket_openssl.cc:1263
19 QtWebEngineCore net::SSLClientSocketOpenSSL::BufferRecvComplete ssl_client_socket_openssl.cc:1525
20 QtWebEngineCore base::internal::Invoker<1, base::internal::BindState<base::internal::RunnableAda bind_internal.h:190
21 QtWebEngineCore net::TCPClientSocket::DidCompleteReadWrite callback.h:441
22 QtWebEngineCore base::internal::Invoker<2, base::internal::BindState<base::internal::RunnableAda bind_internal.h:248
23 QtWebEngineCore net::TCPSocketLibevent::ReadCompleted callback.h:441
24 QtWebEngineCore base::internal::Invoker<3, base::internal::BindState<base::internal::RunnableAda bind_internal.h:310
25 QtWebEngineCore net::SocketLibevent::ReadCompleted callback.h:441
26 QtWebEngineCore base::MessagePumpLibevent::OnLibeventNotification message_pump_libevent.cc:99
27 QtWebEngineCore event_base_loop event.c:373
28 QtWebEngineCore base::MessagePumpLibevent::Run message_pump_libevent.cc:259
29 QtWebEngineCore base::MessageLoop::RunHandler message_loop.cc:415
30 QtWebEngineCore base::RunLoop::Run run_loop.cc:55
31 QtWebEngineCore base::MessageLoop::Run message_loop.cc:308
32 QtWebEngineCore base::Thread::Run thread.cc:174
33 QtWebEngineCore content::BrowserThreadImpl::IOThreadRun browser_thread_impl.cc:218
34 QtWebEngineCore base::Thread::ThreadMain thread.cc:228
35 QtWebEngineCore base:: platform_thread_posix.cc:80
36 libsystem_pthread.dylib libsystem_pthread.dylib@0x3a26
37 libsystem_pthread.dylib libsystem_pthread.dylib@0x399c
38 libsystem_pthread.dylib libsystem_pthread.dylib@0xf96