WinRT: Application crashes randomly when making network calls in the background

Application crashes at: INVALID_POINTER_READ_c0000005_Qt5Core.dll!QBuffer::size
occasionally when making network calls in the background.

The stack trace looks like:
0 Qt5Core!QBuffer::size
1 Qt5Network!QLocalServer::waitForNewConnection
2 Qt5Network!QAbstractSocket::readData
3 Qt5Network!QAbstractSocket::canReadLine
4 Qt5Core!QMetaCallEvent::placeMetaCall
5 Qt5Core!QObject::event
6 Qt5Core!QCoreApplicationPrivate::notify_helper
7 Qt5Core!QCoreApplication::notifyInternal2
8 Qt5Core!QCoreApplicationPrivate::sendPostedEvents
9 Qt5Core!QCoreApplication::sendPostedEvents
10 Qt5Core!QEventDispatcherWinRT::sendPostedEvents
11 Qt5Core!QEventDispatcherWinRT::processEvents
12 Qt5Core!QEventLoop::exec
13 Qt5Core!QThread::exec
14 Qt5Core!QThread::start
15 ntdll!RtlUserThreadStart