Arch Linux

Description:
Plasma Desktop crashes always after clicking on the Desktop Toolbox.

Additional info:
* package version(s):
plasma-desktop 5.9.4-1, qt5-graphicaleffects 5.8.0-1, qt5-declarative 5.8.0-1, qt5-xmlpatterns 5.8.0-1, qt5-base 5.8.0-7

* config and/or log files etc.
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5a17b46800 (LWP 644))]

Thread 9 (Thread 0x7f59499f6700 (LWP 748)):
#0 0x00007f5a111f067d in poll () at /usr/lib/libc.so.6
#1 0x00007f5a0bfd67a6 in () at /usr/lib/libglib-2.0.so.0
#2 0x00007f5a0bfd68bc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3 0x00007f5a11b1709b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4 0x00007f5a11ac08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a118e2a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6 0x00007f594c3940a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#8 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#9 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f595e99a700 (LWP 743)):
#0 0x00007f5a111f067d in poll () at /usr/lib/libc.so.6
#1 0x00007f5a0bfd67a6 in () at /usr/lib/libglib-2.0.so.0
#2 0x00007f5a0bfd68bc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3 0x00007f5a11b1709b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4 0x00007f5a11ac08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a118e2a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6 0x00007f5a155cdfd6 in () at /usr/lib/libQt5Quick.so.5
#7 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#8 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#9 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f5963a64700 (LWP 742)):
#0 0x00007f5a107a2756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1 0x00007f596763d68b in () at /usr/lib/xorg/modules/dri/r600_dri.so
#2 0x00007f596763d3b7 in () at /usr/lib/xorg/modules/dri/r600_dri.so
#3 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f59f239c700 (LWP 741)):
#0 0x00007f5a107a2756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1 0x00007f5a172c1234 in () at /usr/lib/libQt5Script.so.5
#2 0x00007f5a172c1279 in () at /usr/lib/libQt5Script.so.5
#3 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f59f3fff700 (LWP 740)):
#0 0x00007f5a0bfd6106 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#1 0x00007f5a0bfd6744 in () at /usr/lib/libglib-2.0.so.0
#2 0x00007f5a0bfd68bc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3 0x00007f5a11b1709b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4 0x00007f5a11ac08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a118e2a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6 0x00007f5a14a1a085 in () at /usr/lib/libQt5Qml.so.5
#7 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#8 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#9 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f59fa119700 (LWP 733)):
#0 0x00007f5a0bfd5c43 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1 0x00007f5a0bfd66cb in () at /usr/lib/libglib-2.0.so.0
#2 0x00007f5a0bfd68bc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3 0x00007f5a11b1709b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4 0x00007f5a11ac08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a118e2a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6 0x00007f5a14a1a085 in () at /usr/lib/libQt5Qml.so.5
#7 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#8 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#9 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f59fbb61700 (LWP 681)):
#0 0x00007f5a111f067d in poll () at /usr/lib/libc.so.6
#1 0x00007f5a0bfd67a6 in () at /usr/lib/libglib-2.0.so.0
#2 0x00007f5a0bfd68bc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3 0x00007f5a11b1709b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4 0x00007f5a11ac08ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a118e2a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6 0x00007f5a12667125 in () at /usr/lib/libQt5DBus.so.5
#7 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#8 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#9 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5a01d6e700 (LWP 657)):
#0 0x00007f5a111f067d in poll () at /usr/lib/libc.so.6
#1 0x00007f5a161e78e0 in () at /usr/lib/libxcb.so.1
#2 0x00007f5a161e9679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3 0x00007f5a042e0239 in () at /usr/lib/libQt5XcbQpa.so.5
#4 0x00007f5a118e76d8 in () at /usr/lib/libQt5Core.so.5
#5 0x00007f5a1079c2e7 in start_thread () at /usr/lib/libpthread.so.0
#6 0x00007f5a111fa54f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f5a17b46800 (LWP 644)):
[KCrash Handler]
#6 0x00007f5a15678d26 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/libQt5Quick.so.5
#7 0x00007f5a15678dfa in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/libQt5Quick.so.5
#8 0x00007f5a15678dfa in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/libQt5Quick.so.5
#9 0x00007f5a15678f54 in QQuickItem::setVisible(bool) () at /usr/lib/libQt5Quick.so.5
#10 0x00007f5a175f483c in () at /usr/lib/libKF5PlasmaQuick.so.5
#11 0x00007f5a175f5f7e in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#12 0x00007f5a12a3034c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f5a12a37b61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f5a11ac2470 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#15 0x00007f5a1201978e in QWindow::setVisible(bool) () at /usr/lib/libQt5Gui.so.5
#16 0x00007f5a175f2134 in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib/libKF5PlasmaQuick.so.5
#17 0x00007f5a175f4fc8 in () at /usr/lib/libKF5PlasmaQuick.so.5
#18 0x00007f5a175f671b in PlasmaQuick::Dialog::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libKF5PlasmaQuick.so.5
#19 0x00007f5a1498db29 in () at /usr/lib/libQt5Qml.so.5
#20 0x00007f5a1498c4f8 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#21 0x00007f5a14956bdb in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#22 0x00007f5a149573f0 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#23 0x00007f5a14957506 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#24 0x00007f5a14967fb6 in QV4::Runtime::method_setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#25 0x00007f59f17cef42 in ()
#26 0x0000000000000018 in ()
#27 0x00007f59f17cf504 in ()
#28 0x0000000000000000 in ()


Steps to reproduce:
Mouse click on the Desktop Toolbox