https://bugs.kde.org/show_bug.cgi?id=394032

--- Comment #1 from averageradi...@gmail.com ---
The core dump shows the following stack:

(gdb) bt
#0  0x00007f7f4ae039fc in QWeakPointer<QObject>::~QWeakPointer()
(this=0x7ffc85d2d830, __in_chrg=<optimized out>) at
../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:568
#1  0x00007f7f4ae02a16 in QPointer<QAbstractAnimation>::~QPointer()
(this=0x7ffc85d2d830, __in_chrg=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qpointer.h:53
#2  0x00007f7f4ae02a16 in
QAbstractAnimationPrivate::setState(QAbstractAnimation::State)
(this=0x562b845604d0, newState=newState@entry=QAbstractAnimation::Stopped) at
animation/qabstractanimation.cpp:984
#3  0x00007f7f4ae02b17 in QAbstractAnimation::stop()
(this=this@entry=0x562b82881540) at animation/qabstractanimation.cpp:1387
#4  0x00007f7f4ae02bf4 in QAbstractAnimation::setCurrentTime(int)
(this=this@entry=0x562b82881540, msecs=<optimized out>) at
animation/qabstractanimation.cpp:1341
#5  0x00007f7f4ae02aa7 in
QAbstractAnimationPrivate::setState(QAbstractAnimation::State)
(this=0x562b845604d0, newState=QAbstractAnimation::Running) at
animation/qabstractanimation.cpp:1018
#6  0x00007f7f4fa16e7a in QWidgetAnimator::animate(QWidget*, QRect const&,
bool) (this=this@entry=0x562b7e384528, widget=<optimized out>, 
    widget@entry=0x562b7fd1c8c0, _final_geometry=..., animate=<optimized out>,
animate@entry=false) at widgets/qwidgetanimator.cpp:107
#7  0x00007f7f4fa56a14 in QDockAreaLayoutInfo::apply(bool)
(this=0x562b8435ac40, animate=animate@entry=false) at
widgets/qdockarealayout.cpp:1569
#8  0x00007f7f4fa56ae9 in QDockAreaLayoutInfo::apply(bool)
(this=this@entry=0x562b7e384188, animate=animate@entry=false) at
widgets/qdockarealayout.cpp:1557
#9  0x00007f7f4fa56c70 in QDockAreaLayout::apply(bool)
(this=this@entry=0x562b7e3840a8, animate=animate@entry=false) at
widgets/qdockarealayout.cpp:3228
#10 0x00007f7f4fa86d07 in QMainWindowLayoutState::apply(bool)
(animated=<optimized out>, this=0x562b7e383fd0) at
widgets/qmainwindowlayout.cpp:525
#11 0x00007f7f4fa86d07 in
QMainWindowLayout::applyState(QMainWindowLayoutState&, bool)
(this=this@entry=0x562b7e383fb0, newState=..., animate=animate@entry=false) at
widgets/qmainwindowlayout.cpp:2644
#12 0x00007f7f4fa8969e in QMainWindowLayout::setGeometry(QRect const&)
(this=0x562b7e383fb0, _r=...) at widgets/qmainwindowlayout.cpp:1919
#13 0x00007f7f4f948bb8 in QLayoutPrivate::doResize(QSize const&)
(this=this@entry=0x562b7e3551a0, r=...) at kernel/qlayout.cpp:589
#14 0x00007f7f4f949c69 in QLayout::activate() (this=<optimized out>) at
kernel/qlayout.cpp:1114
#15 0x00007f7f4f96ada7 in QWidget::setVisible(bool) (this=0x562b7e513b50,
visible=<optimized out>) at kernel/qwidget.cpp:8308
#16 0x00007f7f4fa11c3d in QToolBarLayout::layoutActions(QSize const&)
(this=this@entry=0x562b7e42a3a0, size=...) at widgets/qtoolbarlayout.cpp:572
#17 0x00007f7f4fa124ed in QToolBarLayout::setGeometry(QRect const&)
(this=0x562b7e42a3a0, rect=...) at widgets/qtoolbarlayout.cpp:399
#18 0x00007f7f4f948bb8 in QLayoutPrivate::doResize(QSize const&)
(this=this@entry=0x562b7e3e0500, r=...) at kernel/qlayout.cpp:589
#19 0x00007f7f4f949c69 in QLayout::activate() (this=<optimized out>) at
kernel/qlayout.cpp:1114
#20 0x00007f7f4f96ada7 in QWidget::setVisible(bool) (this=0x562b7e4c7910,
visible=<optimized out>) at kernel/qwidget.cpp:8308
#21 0x00007f7f4fa125bd in QToolBarLayout::setGeometry(QRect const&)
(this=0x562b7e42a3a0, rect=...) at widgets/qtoolbarlayout.cpp:424
#22 0x00007f7f4f948bb8 in QLayoutPrivate::doResize(QSize const&)
(this=this@entry=0x562b7e3e0500, r=...) at kernel/qlayout.cpp:589
#23 0x00007f7f4f949c69 in QLayout::activate() (this=<optimized out>) at
kernel/qlayout.cpp:1114
#24 0x00007f7f4f92c8fa in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x562b7e4c7370, e=0x7f7f2c012fa0) at
kernel/qapplication.cpp:3713
#25 0x00007f7f4f934174 in QApplication::notify(QObject*, QEvent*)
(this=0x7ffc85d2f800, receiver=0x562b7e4c7370, e=0x7f7f2c012fa0) at
kernel/qapplication.cpp:3481
#26 0x00007f7f4afd1be7 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x562b7e4c7370, event=event@entry=0x7f7f2c012fa0) at
kernel/qcoreapplication.cpp:1016
#27 0x00007f7f4afd436b in QCoreApplication::sendEvent(QObject*, QEvent*)
(event=0x7f7f2c012fa0, receiver=<optimized out>) at
kernel/qcoreapplication.h:233
#28 0x00007f7f4afd436b in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0,
data=0x562b7db83a80)
    at kernel/qcoreapplication.cpp:1676
#29 0x00007f7f4afd4888 in QCoreApplication::sendPostedEvents(QObject*, int)
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at
kernel/qcoreapplication.cpp:1530
#30 0x00007f7f4b022e43 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x562b7dcad5b0) at kernel/qeventdispatcher_glib.cpp:276
#31 0x00007f7f42aa2b77 in g_main_dispatch (context=0x7f7f2c004ff0) at
gmain.c:3142
#32 0x00007f7f42aa2b77 in g_main_context_dispatch
(context=context@entry=0x7f7f2c004ff0) at gmain.c:3795
#33 0x00007f7f42aa2f20 in g_main_context_iterate (context=0x7f7f2c004ff0,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
gmain.c:3868
#34 0x00007f7f42aa3232 in g_main_loop_run (loop=0x562b83fd8560) at gmain.c:4064
#35 0x00007f7f2b66df43 in gtk_dialog_run (dialog=0x562b842e6670
[GtkFileChooserDialog]) at gtkdialog.c:1397
#36 0x00007f7f2bdf83a0 in QGtk3Dialog::exec() (this=0x562b84087e80) at
../src/qgtk3dialoghelpers.cpp:108
#37 0x00007f7f4fb17e44 in QDialog::exec() (this=this@entry=0x7ffc85d2e770) at
dialogs/qdialog.cpp:541
#38 0x0000562b7c3d936e in ProjectManager::saveFileAs() (this=0x562b7e384cc0) at
/usr/src/debug/kdenlive-18.04.0-2.fc27.x86_64/src/project/projectmanager.cpp:349
#39 0x0000562b7c7431d5 in ProjectManager::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=0x562b7e384cc0, _id=<optimized out>,
_a=0x7ffc85d2e940, _c=<optimized out>)
    at
/usr/src/debug/kdenlive-18.04.0-2.fc27.x86_64/x86_64-redhat-linux-gnu/src/kdenlive_autogen/QV7S676PVK/moc_projectmanager.cpp:185
#40 0x00007f7f4affa513 in QMetaObject::activate(QObject*, int, int, void**)
(sender=sender@entry=0x562b7e389120, signalOffset=<optimized out>,
local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffc85d2e940)
at kernel/qobject.cpp:3766
#41 0x00007f7f4affab87 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x562b7e389120, m=m@entry=0x7f7f4fff1940
<QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1,
argv=argv@entry=0x7ffc85d2e940) at kernel/qobject.cpp:3628
#42 0x00007f7f4f9261b2 in QAction::triggered(bool)
(this=this@entry=0x562b7e389120, _t1=<optimized out>) at
.moc/moc_qaction.cpp:370
#43 0x00007f7f4f9288cb in QAction::activate(QAction::ActionEvent)
(this=this@entry=0x562b7e389120, event=event@entry=QAction::Trigger) at
kernel/qaction.cpp:1165
#44 0x00007f7f4faa5ba4 in
QMenuPrivate::activateCausedStack(QVector<QPointer<QWidget> > const&, QAction*,
QAction::ActionEvent, bool) (this=this@entry=0x562b8029d060, causedStack=...,
action=action@entry=0x562b7e389120, action_e=action_e@entry=QAction::Trigger,
self=self@entry=true) at widgets/qmenu.cpp:1323
---Type <return> to continue, or q <return> to quit---
#45 0x00007f7f4faad0db in QMenuPrivate::activateAction(QAction*,
QAction::ActionEvent, bool) (this=this@entry=0x562b8029d060,
action=action@entry=0x562b7e389120, action_e=action_e@entry=QAction::Trigger,
self=self@entry=true) at widgets/qmenu.cpp:1400
#46 0x00007f7f4faadf03 in QMenu::mouseReleaseEvent(QMouseEvent*)
(this=<optimized out>, e=0x7ffc85d2ef50) at widgets/qmenu.cpp:2888
#47 0x00007f7f4f96b2a8 in QWidget::event(QEvent*)
(this=this@entry=0x562b802a9f10, event=event@entry=0x7ffc85d2ef50) at
kernel/qwidget.cpp:9279
#48 0x00007f7f4fab01db in QMenu::event(QEvent*) (this=0x562b802a9f10,
e=0x7ffc85d2ef50) at widgets/qmenu.cpp:3010
#49 0x00007f7f4f92c92c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x562b802a9f10, e=0x7ffc85d2ef50) at
kernel/qapplication.cpp:3722
#50 0x00007f7f4f9346cf in QApplication::notify(QObject*, QEvent*)
(this=<optimized out>, receiver=0x562b802a9f10, e=0x7ffc85d2ef50) at
kernel/qapplication.cpp:3198
#51 0x00007f7f4afd1be7 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x562b802a9f10, event=0x7ffc85d2ef50) at
kernel/qcoreapplication.cpp:1016
#52 0x00007f7f4f9336a2 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool)
(receiver=0x562b802a9f10, event=0x7ffc85d2ef50, alienWidget=0x0,
nativeWidget=0x562b802a9f10, buttonDown=<optimized out>, lastMouseReceiver=...,
spontaneous=true) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#53 0x00007f7f4f9861b3 in QWidgetWindow::handleMouseEvent(QMouseEvent*)
(this=0x7f7f2c010d20, event=0x7ffc85d2f340) at kernel/qwidgetwindow.cpp:523
#54 0x00007f7f4f988b1f in QWidgetWindow::event(QEvent*) (this=0x7f7f2c010d20,
event=0x7ffc85d2f340) at kernel/qwidgetwindow.cpp:250
#55 0x00007f7f4f92c92c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x7f7f2c010d20, e=0x7ffc85d2f340) at
kernel/qapplication.cpp:3722
#56 0x00007f7f4f934174 in QApplication::notify(QObject*, QEvent*)
(this=0x7ffc85d2f800, receiver=0x7f7f2c010d20, e=0x7ffc85d2f340) at
kernel/qapplication.cpp:3481
#57 0x00007f7f4afd1be7 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=receiver@entry=0x7f7f2c010d20, event=event@entry=0x7ffc85d2f340) at
kernel/qcoreapplication.cpp:1016
#58 0x00007f7f4b5248a3 in QCoreApplication::sendSpontaneousEvent(QObject*,
QEvent*) (event=0x7ffc85d2f340, receiver=0x7f7f2c010d20) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#59 0x00007f7f4b5248a3 in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
(e=0x562b826905a0) at kernel/qguiapplication.cpp:1952
#60 0x00007f7f4b526495 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
(e=0x562b826905a0) at kernel/qguiapplication.cpp:1733
#61 0x00007f7f4b4ff79b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(flags=...) at kernel/qwindowsysteminterface.cpp:946
#62 0x00007f7f331c6b60 in userEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (source=<optimized out>) at qeventdispatcher_glib.cpp:77
#63 0x00007f7f42aa2b77 in g_main_dispatch (context=0x7f7f2c004ff0) at
gmain.c:3142
#64 0x00007f7f42aa2b77 in g_main_context_dispatch
(context=context@entry=0x7f7f2c004ff0) at gmain.c:3795
#65 0x00007f7f42aa2f20 in g_main_context_iterate
(context=context@entry=0x7f7f2c004ff0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3868
#66 0x00007f7f42aa2fac in g_main_context_iteration (context=0x7f7f2c004ff0,
may_block=may_block@entry=1) at gmain.c:3929
#67 0x00007f7f4b022c2f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x562b7dd6cd70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#68 0x00007f7f4afd096a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffc85d2f6f0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#69 0x00007f7f4afd9094 in QCoreApplication::exec() () at
kernel/qcoreapplication.cpp:1289
#70 0x0000562b7c341645 in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at
/usr/src/debug/kdenlive-18.04.0-2.fc27.x86_64/src/main.cpp:164

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