Application: systemsettings5 (5.2.0)

Qt Version: 5.4.0
Operating System: Linux 3.18.6-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
When I change the widget style from either QtCurve or GTK+ to Breeze, System Settings crashes. It does not crash when changing from the styles Fusion, MS Windows 9x and Oxygen.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f45d2d707c0 (LWP 7788))]

Thread 2 (Thread 0x7f45c045f700 (LWP 7789)):
#0  0x00007f45cf4ec4ed in poll () from /usr/lib/libc.so.6
#1  0x00007f45cd99c9f2 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f45cd99e56f in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f45c2df43f9 in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#4  0x00007f45cfb625ee in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f45cd116374 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f45cf4f527d in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f45d2d707c0 (LWP 7788)):
[KCrash Handler]
#5  0x00007f45cfd4ca3f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#6  0x00007f45d11eca6d in QApplication::setStyle(QStyle*) () from /usr/lib/libQt5Widgets.so.5
#7  0x00007f45d11ed646 in QApplication::setStyle(QString const&) () from /usr/lib/libQt5Widgets.so.5
#8  0x00007f45bf83decb in ?? () from /usr/lib/qt/plugins/platformthemes/KDEPlatformTheme.so
#9  0x00007f45bf84a5bc in ?? () from /usr/lib/qt/plugins/platformthemes/KDEPlatformTheme.so
#10 0x00007f45d2ebd427 in ?? () from /usr/lib/libQt5DBus.so.5
#11 0x00007f45cfd7d4ba in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#12 0x00007f45d11ead8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#13 0x00007f45d11f0370 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#14 0x00007f45cfd4ca9b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#15 0x00007f45cfd4eadb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#16 0x00007f45cfda3c83 in ?? () from /usr/lib/libQt5Core.so.5
#17 0x00007f45ccbf9a0d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#18 0x00007f45ccbf9cf8 in ?? () from /usr/lib/libglib-2.0.so.0
#19 0x00007f45ccbf9dac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#20 0x00007f45cfda4077 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#21 0x00007f45cfd4a532 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#22 0x00007f45cfd51f0c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#23 0x000000000040e64c in main ()

Reported using DrKonqi