[REG 5.5 -> 5.6] Segfault in QDBusConnectionPrivate::closeConnection -> QObject::disconnect on exit

#0  0x00007ffff1deaab7 in QObject::disconnect (sender=0x7fff8813ff80, signal=signal@entry=0x0, receiver=receiver@entry=0x7fff84010e50, method=method@entry=0x0) at kernel/qobject.cpp:2949
#1  0x00007fffdba4af78 in QObject::disconnect (member=0x0, receiver=0x7fff84010e50, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:361
#2  QDBusConnectionPrivate::closeConnection (this=this@entry=0x7fff84010e50) at qdbusintegrator.cpp:1126
#3  0x00007fffdba3bb36 in QDBusConnectionManager::run (this=0x7fffdbcadd00 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:191
#4  0x00007ffff1be6de8 in QThreadPrivate::start (arg=0x7fffdbcadd00 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:340
#5  0x00007ffff76f5424 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007ffff7434cbd in clone () from /usr/lib/libc.so.6

import sys

from PyQt5.QtCore import QUrl, QTimer
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebKitWidgets import QWebView

app = QApplication(sys.argv)

wv = QWebView()
wv.load(QUrl('http://www.riverbankcomputing.com/'))
wv.show()

QTimer.singleShot(1000, app.quit)
app.exec_()