Description of problem:
I reproduced https://bugzilla.redhat.com/show_bug.cgi?id=2383950#c16, because https://bugs.kde.org/show_bug.cgi?id=516210#c0 was of little use.

Version-Release number of selected component:
krita-5.2.14-1.fc43

Additional info:
reporter:       libreport-2.17.15
type:           CCpp
reason:         krita killed by SIGSEGV
journald_cursor: s=c1f108f1ef4e48808a377c0a73f168fc;i=140bea2;b=128710643ef6431fbcdfe6955a3468b8;m=2704d6e7d;t=64b19b49d6f39;x=52fb4d0a3b144dd2
executable:     /usr/bin/krita
cmdline:        /usr/bin/krita
cgroup:         0::/user.slice/user-1000.slice/user/app.slice/app-\x2fusr\x2fbin\x2fkrita
rootdir:        /
uid:            1000
kernel:         6.18.10-200.fc43.x86_64
package:        krita-5.2.14-1.fc43
runlevel:       /bin/sh: line 1: runlevel: command not found
backtrace_rating: 4
crash_function: QScopedPointer<KisFilterManager::Private, QScopedPointerDeleter<KisFilterManager::Private> >::operator->
comment:        I reproduced https://bugzilla.redhat.com/show_bug.cgi?id=2383950#c16, because https://bugs.kde.org/show_bug.cgi?id=516210#c0 was of little use.

Truncated backtrace:
Thread no. 1 (35 frames)
 #0 QScopedPointer<KisFilterManager::Private, QScopedPointerDeleter<KisFilterManager::Private> >::operator-> at /usr/include/qt5/QtCore/qscopedpointer.h:116
 #1 KisFilterManager::isStrokeRunning at /usr/src/debug/krita-5.2.14-1.fc43.x86_64/libs/ui/kis_filter_manager.cc:384
 #2 KisView::~KisView at /usr/src/debug/krita-5.2.14-1.fc43.x86_64/libs/ui/KisView.cpp:264
 #4 QObjectPrivate::deleteChildren at kernel/qobject.cpp:2137
 #5 QWidget::~QWidget at kernel/qwidget.cpp:1524
 #6 QMdiSubWindow::~QMdiSubWindow at widgets/qmdisubwindow.cpp:2282
 #7 QObjectPrivate::deleteChildren at kernel/qobject.cpp:2137
 #8 QWidget::~QWidget at kernel/qwidget.cpp:1524
 #10 QObjectPrivate::deleteChildren at kernel/qobject.cpp:2137
 #11 QWidget::~QWidget at kernel/qwidget.cpp:1524
 #12 QMdiArea::~QMdiArea at widgets/qmdiarea.cpp:1729
 #13 QObjectPrivate::deleteChildren at kernel/qobject.cpp:2137
 #14 QWidget::~QWidget at kernel/qwidget.cpp:1524
 #15 QStackedWidget::~QStackedWidget at widgets/qstackedwidget.cpp:147
 #16 QObjectPrivate::deleteChildren at kernel/qobject.cpp:2137
 #17 QWidget::~QWidget at kernel/qwidget.cpp:1524
 #18 KisMainWindow::~KisMainWindow at /usr/src/debug/krita-5.2.14-1.fc43.x86_64/libs/ui/KisMainWindow.cpp:692
 #20 QObject::event at kernel/qobject.cpp:1334
 #21 KXmlGuiWindow::event at /usr/src/debug/krita-5.2.14-1.fc43.x86_64/libs/widgetutils/xmlgui/kxmlguiwindow.cpp:113
 #22 QApplicationPrivate::notify_helper at kernel/qapplication.cpp:3640
 #23 QApplication::notify at kernel/qapplication.cpp:3386
 #24 KisApplication::notify at /usr/src/debug/krita-5.2.14-1.fc43.x86_64/libs/ui/KisApplication.cpp:787
 #25 QCoreApplication::notifyInternal2 at kernel/qcoreapplication.cpp:1064
 #26 QCoreApplication::sendEvent at kernel/qcoreapplication.cpp:1462
 #27 QCoreApplicationPrivate::sendPostedEvents at kernel/qcoreapplication.cpp:1821
 #28 QCoreApplication::sendPostedEvents at kernel/qcoreapplication.cpp:1680
 #29 postEventSourceDispatch at kernel/qeventdispatcher_glib.cpp:277
 #31 g_main_context_dispatch_unlocked at ../glib/gmain.c:4425
 #32 g_main_context_iterate_unlocked at ../glib/gmain.c:4490
 #33 g_main_context_iteration at ../glib/gmain.c:4556
 #34 QEventDispatcherGlib::processEvents at kernel/qeventdispatcher_glib.cpp:423
 #35 QEventLoop::exec at ../../include/QtCore/../../src/corelib/global/qflags.h:69
 #36 QCoreApplication::exec at kernel/qcoreapplication.cpp:1375
 #37 QGuiApplication::exec at kernel/qguiapplication.cpp:1863
 #38 QApplication::exec at kernel/qapplication.cpp:2832


Potential duplicate: bug 2383950