I was just moving some files (movies) between drives and suddenly Dolphin crashed (actually multiple times) and a notification saying File transfer complete appeared. This happened only on Wayland so far.

Log:

Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4fbb7c6800 (LWP 5964))]

Thread 3 (Thread 0x7f4f9bfff700 (LWP 5967)):
#0  0x00007f4fb0080ffc in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f4fa0d10094 in ?? () from /usr/lib/dri/i965_dri.so
#2  0x00007f4fa0d0fd88 in ?? () from /usr/lib/dri/i965_dri.so
#3  0x00007f4fb007b075 in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f4fbb08b53f in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f4fa4775700 (LWP 5966)):
#0  0x00007f4fbb07c934 in read () from /usr/lib/libc.so.6
#1  0x00007f4fada2eed1 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f4fad9e8ff8 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3  0x00007f4fad9e94c6 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007f4fad9e963e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0x00007f4fb5246e64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f4fb51f285c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#7  0x00007f4fb503bac9 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#8  0x00007f4fb5696976 in ?? () from /usr/lib/libQt5DBus.so.5
#9  0x00007f4fb5045b95 in ?? () from /usr/lib/libQt5Core.so.5
#10 0x00007f4fb007b075 in start_thread () from /usr/lib/libpthread.so.0
#11 0x00007f4fbb08b53f in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f4fbb7c6800 (LWP 5964)):
[KCrash Handler]
#6  0x00007f4fbacbe5c3 in ?? () from /usr/lib/libdolphinprivate.so.5
#7  0x00007f4fbacfa26e in KStandardItem::setDataValue(QByteArray const&, QVariant const&) () from /usr/lib/libdolphinprivate.so.5
#8  0x00007f4fbacfa582 in KStandardItem::setIcon(QString const&) () from /usr/lib/libdolphinprivate.so.5
#9  0x00007f4fbb3b463a in ?? () from /usr/lib/libkdeinit5_dolphin.so
#10 0x00007f4fb521db60 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#11 0x00007f4fbb3db190 in ?? () from /usr/lib/libkdeinit5_dolphin.so
#12 0x00007f4fbb3a9949 in ?? () from /usr/lib/libkdeinit5_dolphin.so
#13 0x00007f4fb521db60 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#14 0x00007f4fb96198c6 in KCoreDirLister::itemsDeleted(KFileItemList const&) () from /usr/lib/libKF5KIOCore.so.5
#15 0x00007f4fb961c978 in ?? () from /usr/lib/libKF5KIOCore.so.5
#16 0x00007f4fb9623354 in ?? () from /usr/lib/libKF5KIOCore.so.5
#17 0x00007f4fb962360c in ?? () from /usr/lib/libKF5KIOCore.so.5
#18 0x00007f4fb962d5b6 in ?? () from /usr/lib/libKF5KIOCore.so.5
#19 0x00007f4fb521db60 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#20 0x00007f4fb6bbc6ed in KJob::result(KJob*, KJob::QPrivateSignal) () from /usr/lib/libKF5CoreAddons.so.5
#21 0x00007f4fb6bbd1cc in KJob::finishJob(bool) () from /usr/lib/libKF5CoreAddons.so.5
#22 0x00007f4fb95dadf1 in KIO::SimpleJob::slotFinished() () from /usr/lib/libKF5KIOCore.so.5
#23 0x00007f4fb95d164e in KIO::ListJob::slotFinished() () from /usr/lib/libKF5KIOCore.so.5
#24 0x00007f4fb521db60 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#25 0x00007f4fb95b011e in KIO::SlaveInterface::dispatch(int, QByteArray const&) () from /usr/lib/libKF5KIOCore.so.5
#26 0x00007f4fb95ad268 in KIO::SlaveInterface::dispatch() () from /usr/lib/libKF5KIOCore.so.5
#27 0x00007f4fb95b2f8a in KIO::Slave::gotInput() () from /usr/lib/libKF5KIOCore.so.5
#28 0x00007f4fb964d126 in ?? () from /usr/lib/libKF5KIOCore.so.5
#29 0x00007f4fb521da0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#30 0x00007f4fb953f864 in ?? () from /usr/lib/libKF5KIOCore.so.5
#31 0x00007f4fb521e2e2 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#32 0x00007f4fb61f3984 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#33 0x00007f4fb61fb25b in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#34 0x00007f4fb51f3bc9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#35 0x00007f4fb51f6c5c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#36 0x00007f4fb5247864 in ?? () from /usr/lib/libQt5Core.so.5
#37 0x00007f4fad9e9368 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#38 0x00007f4fad9e95b1 in ?? () from /usr/lib/libglib-2.0.so.0
#39 0x00007f4fad9e963e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#40 0x00007f4fb5246e49 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#41 0x00007f4fa6db1f72 in ?? () from /usr/lib/libQt5WaylandClient.so.5
#42 0x00007f4fb51f285c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#43 0x00007f4fb51fab56 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#44 0x00007f4fbb38eac2 in kdemain () from /usr/lib/libkdeinit5_dolphin.so
#45 0x00007f4fbafb606b in __libc_start_main () from /usr/lib/libc.so.6
#46 0x000056069df7675a in _start ()