Application: systemsettings5 (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
用鼠标左键按住 “拖拽我”，拖拽的第二次时，系统设置程序自己关闭。 
但再次使用 系统设置程序， 重复相同的做，却很正常

-- Backtrace:
Application: 系统设置 (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4c8eb34780 (LWP 9719))]

Thread 6 (Thread 0x7f4c7c5c0700 (LWP 9720)):
#0  0x00007f4c8a8c0c1d in poll () at /lib64/libc.so.6
#1  0x00007f4c876a5422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f4c876a700f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f4c7e914c29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f4c8afb755f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c86e300a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f4c8a8c904d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f4c6cfa3700 (LWP 9721)):
#0  0x00007f4c86e3405f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f4c6d1177eb in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f4c6d117819 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f4c86e300a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f4c8a8c904d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f4bdcd41700 (LWP 9736)):
#0  0x00007f4c8a8c0c1d in poll () at /lib64/libc.so.6
#1  0x00007f4c86913e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c8691419a in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4be1fbc426 in  () at /usr/lib64/libgio-2.0.so.0
#4  0x00007f4c86938f65 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f4c86e300a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f4c8a8c904d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f4bd6078700 (LWP 10023)):
#0  0x00007f4c86939409 in g_thread_self () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f4c86912ecc in g_main_context_acquire () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c86913d25 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c86913f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f4c8b1e8a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c8b18fa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c8afb284a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f4c895435f8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f4c8afb755f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f4c86e300a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f4c8a8c904d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f4bd707a700 (LWP 10035)):
#0  0x00007f4c86955cf0 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f4c869136a1 in g_main_context_query () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c86913dcf in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c86913f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f4c8b1e8a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c8b18fa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c8afb284a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f4c895435f8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f4c8afb755f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f4c86e300a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f4c8a8c904d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f4c8eb34780 (LWP 9719)):
[KCrash Handler]
#6  0x00007f4c8c86308b in QStandardItemModel::mimeData(QList<QModelIndex> const&) const () at /usr/lib64/libQt5Gui.so.5
#7  0x00007f4c8cf1ec69 in  () at /usr/lib64/libQt5Widgets.so.5
#8  0x00007f4c8cf1e65f in QListView::startDrag(QFlags<Qt::DropAction>) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007f4c8cf00adf in QAbstractItemView::mouseMoveEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007f4c8cf1e1c4 in QListView::mouseMoveEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#11 0x00007f4c8ccebfe8 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007f4c8cde64de in QFrame::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#13 0x00007f4c8cf014cb in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#14 0x00007f4c8b191de3 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f4c8ccabe6c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007f4c8ccb12db in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f4c8b191ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f4c8ccb01a1 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/libQt5Widgets.so.5
#19 0x00007f4c8cd0525b in  () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007f4c8cd07453 in  () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007f4c8ccabe8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#22 0x00007f4c8ccb0cd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007f4c8b191ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#24 0x00007f4c8c5183b4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#25 0x00007f4c8c519bc5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#26 0x00007f4c8c4fed68 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#27 0x00007f4c7e93ff20 in  () at /usr/lib64/libQt5XcbQpa.so.5
#28 0x00007f4c86913c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f4c86913ed8 in  () at /usr/lib64/libglib-2.0.so.0
#30 0x00007f4c86913f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#31 0x00007f4c8b1e8a3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f4c8b18fa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#33 0x00007f4c8b1975d6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#34 0x00000000004103cf in main ()

Reported using DrKonqi