Created attachment 160956 [details]
Demonstration

If you go to any folder, open it in a new tab, and then delete that folder and remove the tab, almost any next action with the file system will cause Dolphin to crash (e.g. if you try to create another folder afterwards, or delete something)

STEPS TO REPRODUCE
1. Open any folder in a new tab
2. Delete this folder
3. Remove the deleted folder tab
4. Attempt to create any folder, file, or rename.

OBSERVED RESULT
Dolphin is crashing.

EXPECTED RESULT
Nothing's supposed to happen.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: EndeavourOS
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
Graphics platform: Wayland

ADDITIONAL INFORMATION
Application: Dolphin (dolphin), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}
[KCrash Handler]
#6  0x00007f6ce41b78a8 in KCoreDirLister::requestMimeTypeWhileListing() const (this=0x55c5fd2cec00) at /usr/include/c++/13.1.1/bits/unique_ptr.h:199
#7  0x00007f6ce41b1bc5 in operator() (lister=<optimized out>, __closure=<synthetic pointer>) at /usr/src/debug/kio/kio-5.108.0/src/core/kcoredirlister.cpp:667
#8  __gnu_cxx::__ops::_Iter_pred<KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> >::operator()<QList<KCoreDirLister*>::const_iterator> (__it=..., this=<synthetic pointer>) at /usr/include/c++/13.1.1/bits/predefined_ops.h:318
#9  std::__find_if<QList<KCoreDirLister*>::const_iterator, __gnu_cxx::__ops::_Iter_pred<KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> > > (__pred=..., __last=..., __first=...) at /usr/include/c++/13.1.1/bits/stl_algobase.h:2102
#10 std::__find_if<QList<KCoreDirLister*>::const_iterator, __gnu_cxx::__ops::_Iter_pred<KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> > > (__first=..., __last=..., __pred=...) at /usr/include/c++/13.1.1/bits/stl_algobase.h:2118
#11 std::find_if<QList<KCoreDirLister*>::const_iterator, KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> > (__pred=..., __last=..., __first=...) at /usr/include/c++/13.1.1/bits/stl_algo.h:3924
#12 std::none_of<QList<KCoreDirLister*>::const_iterator, KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> > (__first=..., __pred=..., __last=...) at /usr/include/c++/13.1.1/bits/stl_algo.h:477
#13 std::any_of<QList<KCoreDirLister*>::const_iterator, KCoreDirListerCache::updateDirectory(const QUrl&)::<lambda(KCoreDirLister*)> > (__first=..., __last=..., __pred=...) at /usr/include/c++/13.1.1/bits/stl_algo.h:496
#14 KCoreDirListerCache::updateDirectory(QUrl const&) (this=this@entry=0x7f6ce4240560 <_ZZN12_GLOBAL__N_121Q_QGS_kDirListerCache13innerFunctionEvE6holder.lto_priv.0>, _dir=...) at /usr/src/debug/kio/kio-5.108.0/src/core/kcoredirlister.cpp:666
#15 0x00007f6ce41b257f in KCoreDirListerCache::itemsAddedInDirectory(QUrl const&) (this=this@entry=0x7f6ce4240560 <_ZZN12_GLOBAL__N_121Q_QGS_kDirListerCache13innerFunctionEvE6holder.lto_priv.0>, urlDir=...) at /usr/src/debug/kio/kio-5.108.0/src/core/kcoredirlister.cpp:800
#16 0x00007f6ce41b2646 in KCoreDirListerCache::slotFilesAdded(QString const&) (this=0x7f6ce4240560 <_ZZN12_GLOBAL__N_121Q_QGS_kDirListerCache13innerFunctionEvE6holder.lto_priv.0>, dir=<optimized out>) at /usr/src/debug/kio/kio-5.108.0/src/core/kcoredirlister.cpp:792
#17 0x00007f6ce24d1637 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff1b8438d0, r=<optimized out>, this=0x55c5fcc0df60, this=<optimized out>, r=<optimized out>, a=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#18 doActivate<false>(QObject*, int, void**) (sender=0x55c5fcbc0de0, signal_index=6, argv=0x7fff1b8438d0) at kernel/qobject.cpp:3925
#19 0x00007f6ce4116ada in OrgKdeKDirNotifyInterface::FilesAdded(QString const&) (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/kio/build/src/core/KF5KIOCore_autogen/EWIEGA46WW/moc_kdirnotify.cpp:239
#20 0x00007f6ce4116dba in OrgKdeKDirNotifyInterface::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x55c5fcbc0de0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=3, _a=_a@entry=0x7fff1b8439f0) at /usr/src/debug/kio/build/src/core/KF5KIOCore_autogen/EWIEGA46WW/moc_kdirnotify.cpp:106
#21 0x00007f6ce411cc43 in OrgKdeKDirNotifyInterface::qt_metacall(QMetaObject::Call, int, void**) (this=0x55c5fcbc0de0, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff1b8439f0) at /usr/src/debug/kio/build/src/core/KF5KIOCore_autogen/EWIEGA46WW/moc_kdirnotify.cpp:204
#22 0x00007f6ce384c76e in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QVector<int> const&, int) (this=<optimized out>, object=<optimized out>, msg=<optimized out>, metaTypes=<optimized out>, slotIdx=<optimized out>) at /usr/src/debug/qt5-base/qtbase/src/dbus/qdbusintegrator.cpp:1001
#23 0x00007f6ce24c4174 in QObject::event(QEvent*) (this=0x55c5fcbc0de0, e=0x7f6cd4012e80) at kernel/qobject.cpp:1347
#24 0x00007f6ce317893f in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x55c5fcbc0de0, e=0x7f6cd4012e80) at kernel/qapplication.cpp:3640
#25 0x00007f6ce249c6f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55c5fcbc0de0, event=0x7f6cd4012e80) at kernel/qcoreapplication.cpp:1064
#26 0x00007f6ce24a165b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55c5fc9cc550) at kernel/qcoreapplication.cpp:1821
#27 0x00007f6ce24e76d8 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55c5fca2e510) at kernel/qeventdispatcher_glib.cpp:277
#28 0x00007f6ce050fa31 in g_main_dispatch (context=0x7f6cd4000ee0) at ../glib/glib/gmain.c:3460
#29 g_main_context_dispatch (context=0x7f6cd4000ee0) at ../glib/glib/gmain.c:4200
#30 0x00007f6ce056ccc9 in g_main_context_iterate.isra.0 (context=context@entry=0x7f6cd4000ee0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4276
#31 0x00007f6ce050d0e2 in g_main_context_iteration (context=0x7f6cd4000ee0, may_block=1) at ../glib/glib/gmain.c:4343
#32 0x00007f6ce24eb51c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55c5fca32870, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#33 0x00007f6ce249b404 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff1b843ec0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#34 0x00007f6ce249c8a3 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#35 0x00007f6ce293bef2 in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1870
#36 0x00007f6ce3176cda in QApplication::exec() () at kernel/qapplication.cpp:2832
#37 0x000055c5fad1dda8 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/dolphin/dolphin-23.04.3/src/main.cpp:249
[Inferior 1 (process 83537) detached]