SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. application launcher
2. system settings
3. voila

OBSERVED RESULT
System settings closed unexpectedy
Please report this error to help improve this software. 

report:
Application: System Settings (systemsettings5), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f43d2f3b610 in QObject::objectName() const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f43cc6054d6 in chameleon::ChameleonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/libchameleon.so
#6  0x00007f43cc5ff9e0 in chameleon::ChameleonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const () from /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/libchameleon.so
#7  0x00007f438819689f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/qqc2desktopstyle/private/libqqc2desktopstyleplugin.so
#8  0x00007f438819787f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/qqc2desktopstyle/private/libqqc2desktopstyleplugin.so
#9  0x00007f43d239bd95 in QQuickWindowPrivate::polishItems() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f43d242118e in QQuickRenderControl::polishItems() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f43d26bebe5 in ?? () from /lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#12 0x00007f43d3b11a04 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f43d3ad115f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f43d2f11fca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f43d3b09046 in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f43d3b0d963 in QWidgetPrivate::show_helper() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f43d3b10af3 in QWidgetPrivate::setVisible(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f43d3b0d8e9 in QWidgetPrivate::showChildren(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f43d3b0d97f in QWidgetPrivate::show_helper() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f43d3b0d909 in QWidgetPrivate::showChildren(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f43d3b0d97f in QWidgetPrivate::show_helper() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f43d3b10af3 in QWidgetPrivate::setVisible(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f43d3b0d8e9 in QWidgetPrivate::showChildren(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f43d3b0d97f in QWidgetPrivate::show_helper() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f43d3b10af3 in QWidgetPrivate::setVisible(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x0000558f5e8c282f in ?? ()
#27 0x0000558f5e8c41d9 in ?? ()
#28 0x00007f43d2f3dff1 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f43d4478659 in KXmlGuiWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#30 0x00007f43d3ad115f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f43d2f11fca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f43d2f14a01 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f43d2f69e93 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f43d0a32e6b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f43d0a33118 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f43d0a331cf in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f43d2f6951f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f43d2f1098b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f43d2f18c00 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x0000558f5e8bfd2c in ?? ()
#41 0x00007f43d28e5d0a in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#42 0x0000558f5e8c06ea in _start ()
[Inferior 1 (process 1339) detached]



EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: win10
macOS: 
Linux/KDE Plasma: q4OS windows app 
(available in About System) info center closed unexpedtly report it
KDE Plasma Version:  crashed
KDE Frameworks Version: crashed
Qt Version: crashed

ADDITIONAL INFORMATION