Application: kwin_x11 (5.14.3)

Qt Version: 5.11.2
Frameworks Version: 5.51.0
Operating System: Linux 4.18.16-arch1-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Launched Stellaris from steam, immediately after launching the game kwin crashes. Encountered this problem several time always in cases like this

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc5b01c4840 (LWP 866))]

Thread 6 (Thread 0x7fc509de8700 (LWP 1167)):
#0  0x00007fc5ba059d16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc5b8c60e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc5b8c6238b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc5b8c108cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc5b8a59eb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc5b7077859 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fc5b8a63f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc5b784aa9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc5ba064b23 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fc59f1ef700 (LWP 946)):
#0  0x00007fc5b7850afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc5b854820c in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fc5b8548229 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fc5b784aa9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fc5ba064b23 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fc59d872700 (LWP 944)):
#0  0x00007fc5b7850afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc59de0c1ac in  () at /usr/lib/dri/i965_dri.so
#2  0x00007fc59de0bee8 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007fc5b784aa9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fc5ba064b23 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fc5ad096700 (LWP 938)):
#0  0x00007fc5ba059d16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc5b8c60e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc5b8c6238b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc5b8c108cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc5b8a59eb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc5b7077859 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fc5b8a63f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc5b784aa9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc5ba064b23 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fc5ae4f5700 (LWP 920)):
#0  0x00007fc5ba059d16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc5b8c60e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc5b8c6238b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc5b8c108cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc5b8a59eb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc5b6b4eba6 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007fc5b8a63f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc5b784aa9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc5ba064b23 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fc5b01c4840 (LWP 866)):
[KCrash Handler]
#6  0x00007fc5b9fa0d7f in raise () at /usr/lib/libc.so.6
#7  0x00007fc5b9f8b672 in abort () at /usr/lib/libc.so.6
#8  0x00007fc5b9f8b548 in _nl_load_domain.cold.0 () at /usr/lib/libc.so.6
#9  0x00007fc5b9f99396 in  () at /usr/lib/libc.so.6
#10 0x00007fc5b76eac30 in  () at /usr/lib/libepoxy.so.0
#11 0x00007fc5b7743520 in  () at /usr/lib/libepoxy.so.0
#12 0x00007fc5b773141a in  () at /usr/lib/libepoxy.so.0
#13 0x00007fc5b86cb149 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#14 0x00007fc5b86cb1d9 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#15 0x00007fc5b8c399bb in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#16 0x00007fc5b8c42955 in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#17 0x00007fc5b86c7f09 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#18 0x00007fc5b9de9b3a in KWin::EffectsHandlerImpl::unloadAllEffects() () at /usr/lib/libkwin.so.5
#19 0x00007fc5b9de9bd8 in KWin::EffectsHandlerImpl::~EffectsHandlerImpl() () at /usr/lib/libkwin.so.5
#20 0x00007fc5adccf199 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#21 0x00007fc5adccf269 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#22 0x00007fc5b9dca45f in  () at /usr/lib/libkwin.so.5
#23 0x00007fc5b9dcaa1d in KWin::Compositor::suspend(KWin::Compositor::SuspendReason) () at /usr/lib/libkwin.so.5
#24 0x00007fc5b8c3c352 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#25 0x00007fc5b958be14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007fc5b95936e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#27 0x00007fc5b8c11c39 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#28 0x00007fc5b8c14ccc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#29 0x00007fc5b8c621fd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#30 0x00007fc5afda405e in  () at /usr/lib/libQt5XcbQpa.so.5
#31 0x00007fc5b8c108cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#32 0x00007fc5b8c18bc6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#33 0x00007fc5ba136b26 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#34 0x00007fc5b9f8d223 in __libc_start_main () at /usr/lib/libc.so.6
#35 0x000056109863005e in _start ()
[Inferior 1 (process 866) detached]

Reported using DrKonqi