Crash when switching theme and restaring Creator

Thread 1 (Thread 0x7f4af322a900 (LWP 211382)):
#0  0x00007f4a989f7fca in Core::Internal::acceptModalDialogs () at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/icore.cpp:2127
#1  0x00007f4a989f806f in operator() (__closure=0x563f916708e0) at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/icore.cpp:2144
#2  0x00007f4a98a0147c in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, Core::ICore::exit()::<lambda()> >::call(struct {...} &, void **) (f=..., arg=0x563f927f56a8) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:127
#3  0x00007f4a98a00902 in QtPrivate::Functor<Core::ICore::exit()::<lambda()>, 0>::call<QtPrivate::List<>, void>(struct {...} &, void *, void **) (f=..., arg=0x563f927f56a8) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:241
#4  0x00007f4a989ff840 in QtPrivate::QFunctorSlotObject<Core::ICore::exit()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=1, this_=0x563f916708d0, r=0x563f83e3cfc0, a=0x563f927f56a8, ret=0x0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:408
#5  0x00007f4af3995fa5 in QtPrivate::QSlotObjectBase::call (this=0x563f916708d0, r=0x563f83e3cfc0, a=0x563f927f56a8) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:363
#6  0x00007f4af39fe163 in QMetaCallEvent::placeMetaCall (this=0x563f927f5660, object=0x563f83e3cfc0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:608
#7  0x00007f4af39ff3db in QObject::event (this=0x563f83e3cfc0, e=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:1378
#8  0x00007f4af583380d in QWidget::event (this=0x563f83e3cfc0, event=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qwidget.cpp:9285
#9  0x00007f4af5a490bc in QMainWindow::event (this=0x563f83e3cfc0, event=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/widgets/widgets/qmainwindow.cpp:1303
#10 0x00007f4af57a1f74 in QApplicationPrivate::notify_helper (this=0x563f83943a90, receiver=0x563f83e3cfc0, e=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:3315
#11 0x00007f4af57a1d3e in QApplication::notify (this=0x563f8395a9a0, receiver=0x563f83e3cfc0, e=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:3262
#12 0x00007f4af3974b7b in QCoreApplication::notifyInternal2 (receiver=0x563f83e3cfc0, event=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#13 0x00007f4af3975719 in QCoreApplication::sendEvent (receiver=0x563f83e3cfc0, event=0x563f927f5660) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1479
#14 0x00007f4af3976670 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x563f83945ee0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1841
#15 0x00007f4af3975f3e in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1700
#16 0x00007f4af3db02fe in postEventSourceDispatch (s=0x563f839c8ee0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:243
#17 0x00007f4af331bd3b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f4af3371258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f4af33193e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f4af3db0bc0 in QEventDispatcherGlib::processEvents (this=0x563f839c7ed0, flags=...) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:393
#21 0x00007f4aefd145d8 in QXcbGlibEventDispatcher::processEvents (this=0x563f839c7ed0, flags=...) at /home/jarek/dev/qt-64/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:96
#22 0x00007f4af3975242 in QCoreApplication::processEvents (flags=...) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1292
#23 0x00007f4a98850834 in Core::Internal::SettingsDialog::execDialog (this=0x563f92b13b00) at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/dialogs/settingsdialog.cpp:798
#24 0x00007f4a98850a1b in Core::Internal::executeSettingsDialog (parent=0x563f83e3cfc0, initialPage=...) at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/dialogs/settingsdialog.cpp:820
#25 0x00007f4a989ebc35 in Core::ICore::showOptionsDialog (page=..., parent=0x0) at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/icore.cpp:477
#26 0x00007f4a989f2ab4 in operator() (__closure=0x563f83e97c20) at /home/jarek/dev/creator-master-work/src/plugins/coreplugin/icore.cpp:1836
#27 0x00007f4a98a020dc in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, Core::Internal::ICorePrivate::registerDefaultActions()::<lambda()> >::call(struct {...} &, void **) (f=..., arg=0x7ffd7e418aa0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:127
#28 0x00007f4a98a01067 in QtPrivate::Functor<Core::Internal::ICorePrivate::registerDefaultActions()::<lambda()>, 0>::call<QtPrivate::List<>, void>(struct {...} &, void *, void **) (f=..., arg=0x7ffd7e418aa0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:241
#29 0x00007f4a98a001b2 in QtPrivate::QFunctorSlotObject<Core::Internal::ICorePrivate::registerDefaultActions()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=1, this_=0x563f83e97c10, r=0x563f83a51560, a=0x7ffd7e418aa0, ret=0x0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:408
#30 0x00007f4af3995fa5 in QtPrivate::QSlotObjectBase::call (this=0x563f83e97c10, r=0x563f83a51560, a=0x7ffd7e418aa0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:363
#31 0x00007f4af3a10fe4 in doActivate<false> (sender=0x563f83e97b10, signal_index=7, argv=0x7ffd7e418aa0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:3979
#32 0x00007f4af3a07349 in QMetaObject::activate (sender=0x563f83e97b10, m=0x7f4af54b7fc0 <QAction::staticMetaObject>, local_signal_index=4, argv=0x7ffd7e418aa0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:4039
#33 0x00007f4af4cf39bd in QAction::triggered (this=0x563f83e97b10, _t1=false) at /home/jarek/dev/qt-64-build/qtbase/src/gui/Gui_autogen/include/moc_qaction.cpp:576
#34 0x00007f4af68a353c in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<bool>, void, void (QAction::*)(bool)>::call (f=(void (QAction::*)(QAction * const, bool)) 0x7f4af4cf395a <QAction::triggered(bool)>, o=0x563f83e97b10, arg=0x7ffd7e418d10) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:135
#35 0x00007f4af68a33e5 in QtPrivate::FunctionPointer<void (QAction::*)(bool)>::call<QtPrivate::List<bool>, void> (f=(void (QAction::*)(QAction * const, bool)) 0x7f4af4cf395a <QAction::triggered(bool)>, o=0x563f83e97b10, arg=0x7ffd7e418d10) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:172
#36 0x00007f4af68a3303 in QtPrivate::QSlotObject<void (QAction::*)(bool), QtPrivate::List<bool>, void>::impl (which=1, this_=0x563f84495450, r=0x563f83e97b10, a=0x7ffd7e418d10, ret=0x0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:383
#37 0x00007f4af3995fa5 in QtPrivate::QSlotObjectBase::call (this=0x563f84495450, r=0x563f83e97b10, a=0x7ffd7e418d10) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobjectdefs_impl.h:363
#38 0x00007f4af3a10fe4 in doActivate<false> (sender=0x563f83e93500, signal_index=7, argv=0x7ffd7e418d10) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:3979
#39 0x00007f4af3a07349 in QMetaObject::activate (sender=0x563f83e93500, m=0x7f4af54b7fc0 <QAction::staticMetaObject>, local_signal_index=4, argv=0x7ffd7e418d10) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qobject.cpp:4039
#40 0x00007f4af4cf39bd in QAction::triggered (this=0x563f83e93500, _t1=false) at /home/jarek/dev/qt-64-build/qtbase/src/gui/Gui_autogen/include/moc_qaction.cpp:576
#41 0x00007f4af4cf24a8 in QAction::activate (this=0x563f83e93500, event=QAction::Trigger) at /home/jarek/dev/qt-64/qtbase/src/gui/kernel/qaction.cpp:1104
#42 0x00007f4af5a9c193 in QMenuPrivate::activateCausedStack (this=0x563f83ecc5b0, causedStack=..., action=0x563f83e93500, action_e=QAction::Trigger, self=true) at /home/jarek/dev/qt-64/qtbase/src/widgets/widgets/qmenu.cpp:1396
#43 0x00007f4af5a9c66f in QMenuPrivate::activateAction (this=0x563f83ecc5b0, action=0x563f83e93500, action_e=QAction::Trigger, self=true) at /home/jarek/dev/qt-64/qtbase/src/widgets/widgets/qmenu.cpp:1478
#44 0x00007f4af5aa1480 in QMenu::mouseReleaseEvent (this=0x563f83ece540, e=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/widgets/widgets/qmenu.cpp:2904
#45 0x00007f4af5831eda in QWidget::event (this=0x563f83ece540, event=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qwidget.cpp:8848
#46 0x00007f4af5aa1ec0 in QMenu::event (this=0x563f83ece540, e=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/widgets/widgets/qmenu.cpp:3029
#47 0x00007f4af57a1f74 in QApplicationPrivate::notify_helper (this=0x563f83943a90, receiver=0x563f83ece540, e=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:3315
#48 0x00007f4af579fbcb in QApplication::notify (this=0x563f8395a9a0, receiver=0x563f83ece540, e=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:2803
#49 0x00007f4af3974b7b in QCoreApplication::notifyInternal2 (receiver=0x563f83ece540, event=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#50 0x00007f4af39757a9 in QCoreApplication::sendSpontaneousEvent (receiver=0x563f83ece540, event=0x7ffd7e4196e0) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1493
#51 0x00007f4af579e676 in QApplicationPrivate::sendMouseEvent (receiver=0x563f83ece540, event=0x7ffd7e4196e0, alienWidget=0x0, nativeWidget=0x563f83ece540, buttonDown=0x7f4af618f4f0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:2387
#52 0x00007f4af58654f4 in QWidgetWindow::handleMouseEvent (this=0x563f93749b90, event=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qwidgetwindow.cpp:519
#53 0x00007f4af58644b3 in QWidgetWindow::event (this=0x563f93749b90, event=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qwidgetwindow.cpp:241
#54 0x00007f4af57a1f74 in QApplicationPrivate::notify_helper (this=0x563f83943a90, receiver=0x563f93749b90, e=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:3315
#55 0x00007f4af57a1d66 in QApplication::notify (this=0x563f8395a9a0, receiver=0x563f93749b90, e=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:3266
#56 0x00007f4af3974b7b in QCoreApplication::notifyInternal2 (receiver=0x563f93749b90, event=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#57 0x00007f4af39757a9 in QCoreApplication::sendSpontaneousEvent (receiver=0x563f93749b90, event=0x7ffd7e419c60) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1493
#58 0x00007f4af47dd0c3 in QGuiApplicationPrivate::processMouseEvent (e=0x563f8fddfe60) at /home/jarek/dev/qt-64/qtbase/src/gui/kernel/qguiapplication.cpp:2249
#59 0x00007f4af47dc3da in QGuiApplicationPrivate::processWindowSystemEvent (e=0x563f8fddfe60) at /home/jarek/dev/qt-64/qtbase/src/gui/kernel/qguiapplication.cpp:1998
#60 0x00007f4af488c3d0 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at /home/jarek/dev/qt-64/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1108
#61 0x00007f4aefd1437a in xcbSourceDispatch (source=0x563f839cf1e0) at /home/jarek/dev/qt-64/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:57
#62 0x00007f4af331bd3b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f4af3371258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f4af33193e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#65 0x00007f4af3db0bc0 in QEventDispatcherGlib::processEvents (this=0x563f839c7ed0, flags=...) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:393
#66 0x00007f4aefd145d8 in QXcbGlibEventDispatcher::processEvents (this=0x563f839c7ed0, flags=...) at /home/jarek/dev/qt-64/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:96
#67 0x00007f4af3988e4d in QEventLoop::processEvents (this=0x7ffd7e41a120, flags=...) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qeventloop.cpp:100
#68 0x00007f4af39891bc in QEventLoop::exec (this=0x7ffd7e41a120, flags=...) at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qeventloop.cpp:182
#69 0x00007f4af39754e6 in QCoreApplication::exec () at /home/jarek/dev/qt-64/qtbase/src/corelib/kernel/qcoreapplication.cpp:1384
#70 0x00007f4af47dbce4 in QGuiApplication::exec () at /home/jarek/dev/qt-64/qtbase/src/gui/kernel/qguiapplication.cpp:1859
#71 0x00007f4af579ef7d in QApplication::exec () at /home/jarek/dev/qt-64/qtbase/src/widgets/kernel/qapplication.cpp:2595
#72 0x0000563f82ab488e in main (argc=1, argv=0x7ffd7e41a888) at /home/jarek/dev/creator-master-work/src/app/main.cpp:894