STEPS TO REPRODUCE
1. Open Konsole
2. Edit Profile
3. Appearance
4. Get new
5. Install random theme.
6. Crashes

OBSERVED RESULT

When I press on install on a random theme, it crashes and my default panel also restarts. So it looks like the whole taskbar is restarting. 


EXPECTED RESULT

Install of the theme

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch KDE
(available in About System)
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.1

BACKTRACE

Application: Konsole (konsole), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f74143f4098 in QObject::thread() const () at /usr/lib/libQt5Core.so.5
#5  0x00007f74143fa5fc in QObject::killTimer(int) () at /usr/lib/libQt5Core.so.5
#6  0x00007f741440534a in QTimer::stop() () at /usr/lib/libQt5Core.so.5
#7  0x00007f74144053c0 in QTimer::start() () at /usr/lib/libQt5Core.so.5
#8  0x00007f7414401036 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f7413ac5716 in KNSCore::Engine::signalEntryChanged(KNSCore::EntryInternal const&) () at /usr/lib/libKF5NewStuffCore.so.5
#10 0x00007f7413adccf7 in KNSCore::Engine::install(KNSCore::EntryInternal, int) () at /usr/lib/libKF5NewStuffCore.so.5
#11 0x00007f7413e74e3e in  () at /usr/lib/libKF5NewStuff.so.5
#12 0x00007f7414401036 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f7414f82b23 in QAbstractButton::clicked(bool) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f7414f834ac in  () at /usr/lib/libQt5Widgets.so.5
#15 0x00007f7414f84e53 in  () at /usr/lib/libQt5Widgets.so.5
#16 0x00007f7414f85033 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f7415079d7b in QToolButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f7414ed2b0e in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f7414e91752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f7414e9887b in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007f74143c9cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007f7414e9787e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /usr/lib/libQt5Widgets.so.5
#23 0x00007f7414eeb249 in  () at /usr/lib/libQt5Widgets.so.5
#24 0x00007f7414eee63f in  () at /usr/lib/libQt5Widgets.so.5
#25 0x00007f7414e91752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f74143c9cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#27 0x00007f74147a44ac in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#28 0x00007f7414779bac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#29 0x00007f740feecf9c in  () at /usr/lib/libQt5XcbQpa.so.5
#30 0x00007f741296a914 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#31 0x00007f74129be7d1 in  () at /usr/lib/libglib-2.0.so.0
#32 0x00007f7412969121 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#33 0x00007f7414422941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#34 0x00007f74143c865c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#35 0x00007f7415094f6a in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#36 0x00007f7413e55e85 in KNS3::Button::showDialog() () at /usr/lib/libKF5NewStuff.so.5
#37 0x00007f7414401036 in  () at /usr/lib/libQt5Core.so.5
#38 0x00007f7414f82b23 in QAbstractButton::clicked(bool) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007f7414f834ac in  () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f7414f84e53 in  () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f7414f85033 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#42 0x00007f7414ed2b0e in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#43 0x00007f7414e91752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#44 0x00007f7414e9887b in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#45 0x00007f74143c9cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#46 0x00007f7414e9787e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /usr/lib/libQt5Widgets.so.5
#47 0x00007f7414eeb249 in  () at /usr/lib/libQt5Widgets.so.5
#48 0x00007f7414eee63f in  () at /usr/lib/libQt5Widgets.so.5
#49 0x00007f7414e91752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#50 0x00007f74143c9cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#51 0x00007f74147a44ac in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#52 0x00007f7414779bac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#53 0x00007f740feecf9c in  () at /usr/lib/libQt5XcbQpa.so.5
#54 0x00007f741296a914 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#55 0x00007f74129be7d1 in  () at /usr/lib/libglib-2.0.so.0
#56 0x00007f7412969121 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#57 0x00007f7414422941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#58 0x00007f74143c865c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#59 0x00007f74143d0af4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#60 0x00007f7415cd574a in kdemain () at /usr/lib/libkdeinit5_konsole.so
#61 0x00007f7415b0c152 in __libc_start_main () at /usr/lib/libc.so.6
#62 0x00005589de5b305e in _start ()
[Inferior 1 (process 18487) detached]