Application: kdeinit5 (20.08.2)

Qt Version: 5.14.2
Frameworks Version: 5.74.0
Operating System: Linux 5.8.0-33-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.10

-- Information about the crash:
- What I was doing when the application crashed:

viewing directory of png images (each opened in gwenview) from a sub directory. Each dir has about 200-300 images. Had sub dir expanded (wasn't navigating to sub directory).
After viewing several images (and closing them in gwenview) Dolphin crashes.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (kdeinit5), signal: Segmentation fault

[KCrash Handler]
#4  0x00007fcf9417b593 in QHashData::free_helper(void (*)(QHashData::Node*)) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcf8e74a221 in KFileItemModel::removeItems(KItemRangeList const&, KFileItemModel::RemoveItemsBehavior) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#6  0x00007fcf8e755af6 in KFileItemModel::setExpanded(int, bool) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#7  0x00007fcf8e765c84 in KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#8  0x00007fcf8e768749 in KItemListController::processEvent(QEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#9  0x00007fcf8e7782c1 in KItemListView::event(QEvent*) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#10 0x00007fcf936be013 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fcf943221ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fcf939dc70d in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fcf939dcac1 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fcf939e2300 in QGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fcf939eef91 in QGraphicsScene::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fcf936be013 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fcf943221ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fcf93a0be78 in QGraphicsView::mouseReleaseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fcf936ff30e in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fcf937a82a2 in QFrame::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fcf94321ed3 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fcf936be002 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fcf936c3841 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fcf943221ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fcf936c273a in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007fcf93717f32 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fcf9371ad8e in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fcf936be013 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fcf943221ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fcf946f548b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#31 0x00007fcf946cb2bb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#32 0x00007fcf8db4535e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#33 0x00007fcf92aaa4db in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fcf92aaa788 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fcf92aaa853 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fcf94379843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fcf94320a4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fcf94328fc6 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007fcf8e84c7c5 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#40 0x0000555d9bc0ea5e in ?? ()
#41 0x0000555d9bc0fe71 in ?? ()
#42 0x0000555d9bc1061c in ?? ()
#43 0x0000555d9bc0c0ef in ?? ()
#44 0x00007fcf93eb5cb2 in __libc_start_main (main=0x555d9bc0b750, argc=1, argv=0x7ffe8c5ef958, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe8c5ef948) at ../csu/libc-start.c:314
#45 0x0000555d9bc0cbee in ?? ()
[Inferior 1 (process 50539) detached]

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