Bug 376447

Summary:	Crash when select font in title clip editor
Product:	[Applications] kdenlive	Reporter:	Aleksey Samoilov <samoilov.lex>
Component:	Video Effects & Transitions	Assignee:	Vincent PINON <vpinon>
Status:	RESOLVED FIXED
Severity:	crash	CC:	wegwerf-1-2-3
Priority:	NOR
Version First Reported In:	16.12.1
Target Milestone:	---
Platform:	Debian testing
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Aleksey Samoilov 2017-02-13 13:24:32 UTC

Application: kdenlive (16.12.1)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.0-1-amd64 x86_64
Distribution: Debian GNU/Linux 9.0 (stretch)

-- Information about the crash:
Select font in text clip editor causes crash. Steps to reproduce:

1)Add text clip
2)Change font size and select any font

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f66da2f8940 (LWP 9813))]

Thread 10 (Thread 0x7f6665c8b700 (LWP 10027)):
#0  0x00007f66cc7424ae in pa_stream_get_state () from /lib/x86_64-linux-gnu/libpulse.so.0
#1  0x00007f66b700be50 in ?? () from /lib/x86_64-linux-gnu/libSDL-1.2.so.0
#2  0x00007f66b6fde7a0 in ?? () from /lib/x86_64-linux-gnu/libSDL-1.2.so.0
#3  0x00007f66b6fe7f38 in ?? () from /lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4  0x00007f66b7027dd9 in ?? () from /lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5  0x00007f66cf7fe424 in start_thread (arg=0x7f6665c8b700) at pthread_create.c:333
#6  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f6667913700 (LWP 10026)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f66d8f95fab in consumer_read_ahead_thread (arg=0x5633e12e9a90) at mlt_consumer.c:842
#2  0x00005633ddfe9bad in RenderThread::run (this=0x7f6658004c80) at ./src/monitor/glwidget.cpp:1272
#3  0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f66cf7fe424 in start_thread (arg=0x7f6667913700) at pthread_create.c:333
#5  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f666648c700 (LWP 10025)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f66b7272490 in consumer_thread (arg=0x5633e12e9a90) at consumer_sdl_audio.c:595
#2  0x00007f66cf7fe424 in start_thread (arg=0x7f666648c700) at pthread_create.c:333
#3  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f6656452700 (LWP 10023)):
#0  0x00007f66cc9f7fe9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66cc9b18c0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66cc9b28a5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66d324406b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66d301b0f3 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66cf7fe424 in start_thread (arg=0x7f6656452700) at pthread_create.c:333
#9  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f6656c53700 (LWP 10022)):
#0  0x00007f66cc9afa1f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66cc9b2334 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66cc9b2994 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66d324406b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66d301b0f3 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66cf7fe424 in start_thread (arg=0x7f6656c53700) at pthread_create.c:333
#9  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f6694a7e700 (LWP 9823)):
#0  __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:96
#1  0x00007f66d2415559 in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0x00007f66cc9b29f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66d324406b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66d301b0f3 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66d3db66a5 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f66cf7fe424 in start_thread (arg=0x7f6694a7e700) at pthread_create.c:333
#10 0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f6696280700 (LWP 9820)):
#0  0x00007f66cc9f8004 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66cc9b1fe0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66cc9b291b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66d324406b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66d301b0f3 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66d3db66a5 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f66cf7fe424 in start_thread (arg=0x7f6696280700) at pthread_create.c:333
#10 0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f6699f5c700 (LWP 9819)):
#0  0x00007f66d241554d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f66a4724bd1 in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007f66cf7fe424 in start_thread (arg=0x7f6699f5c700) at pthread_create.c:333
#3  0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f66bf486700 (LWP 9816)):
#0  0x00007ffd10993949 in ?? ()
#1  0x00007ffd10993bd9 in clock_gettime ()
#2  0x00007f66d242b856 in __GI___clock_gettime (clock_id=1, tp=0x7f66bf4859b0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f66d30c5091 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f66d3241ce9 in QTimerInfoList::updateCurrentTime() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66d3242295 in QTimerInfoList::timerWait(timespec&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66d324363e in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66cc9b1edd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f66cc9b291b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f66d324406b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f66d301b0f3 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f66da3616d5 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007f66d301fda8 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f66cf7fe424 in start_thread (arg=0x7f66bf486700) at pthread_create.c:333
#16 0x00007f66d241e9bf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f66da2f8940 (LWP 9813)):
[KCrash Handler]
#6  0x00007f66d4bf2f0f in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f66c6c0a3a6 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8  0x00007f66d4c323c0 in QListView::selectionChanged(QItemSelection const&, QItemSelection const&) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f66d4c0c721 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f66d321b5e9 in QMetaObject::activate(QObject*, int, int, void**) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f66d319ebe7 in QItemSelectionModel::selectionChanged(QItemSelection const&, QItemSelection const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f66d31a344b in QItemSelectionModel::emitSelectionChanged(QItemSelection const&, QItemSelection const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f66d31a6f92 in QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f66d31a097c in QItemSelectionModel::select(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f66d319f034 in QItemSelectionModel::setCurrentIndex(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f66d4ac1f91 in QComboBox::showPopup() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f66d4ac2cf5 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f66d4a03bef in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f66d4abee16 in QComboBox::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f66d49c41fd in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f66d49c28ad in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f66d4a1d906 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f66d4a20313 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f66d49c3341 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f66d3537b03 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#30 0x00007f66d3539685 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#31 0x00007f66d351761b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#32 0x00007f66c6bed4c0 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#33 0x00007f66cc9b27f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f66cc9b2a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f66d324404f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f66d4baa0e7 in QDialog::exec() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00005633ddf25437 in ClipCreationDialog::createTitleClip (doc=0x5633e197a460, groupInfo=..., templatePath=..., bin=0x5633deb42f10) at ./src/dialogs/clipcreationdialog.cpp:270
#40 0x00005633de0a746f in Bin::slotCreateProjectClip (this=0x5633deb42f10) at ./src/bin/bin.cpp:2297
#41 0x00005633de130a86 in Bin::qt_static_metacall (_o=0x5633deb42f10, _c=<optimized out>, _id=<optimized out>, _a=0x7ffd108a4250) at ./obj-x86_64-linux-gnu/src/kdenlive_automoc.dir/moc_bin_J3XKS2NPU2Q4TD.cpp:1228
#42 0x00007f66d321b5e9 in QMetaObject::activate(QObject*, int, int, void**) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f66d49b51c2 in QAction::triggered(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007f66d49b7bb0 in QAction::activate(QAction::ActionEvent) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f66d4b271ca in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f66d4b2e854 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f66d4b2f826 in QMenu::mouseReleaseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007f66d4a03278 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007f66d4b31b53 in QMenu::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#51 0x00007f66d49c41fd in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#52 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007f66d49c28ad in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007f66d4a1dd16 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#55 0x00007f66d4a20313 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#56 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#57 0x00007f66d49c3341 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#58 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#59 0x00007f66d3537b03 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#60 0x00007f66d3539685 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#61 0x00007f66d351761b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#62 0x00007f66c6bed4c0 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#63 0x00007f66cc9b27f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f66cc9b2a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#65 0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#66 0x00007f66d324404f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#68 0x00007f66d4b2c31d in QMenu::exec(QPoint const&, QAction*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#69 0x00005633de09d2f7 in Bin::contextMenuEvent (this=<optimized out>, event=<optimized out>) at ./src/bin/bin.cpp:1696
#70 0x00007f66d4a03278 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#71 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#72 0x00007f66d49c4480 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#73 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#74 0x00007f66d4a1da5b in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#75 0x00007f66d4a20313 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#76 0x00007f66d49bbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#77 0x00007f66d49c3341 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#78 0x00007f66d31ef9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#79 0x00007f66d3537b03 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#80 0x00007f66d3539685 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#81 0x00007f66d351761b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#82 0x00007f66c6bed4c0 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#83 0x00007f66cc9b27f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#84 0x00007f66cc9b2a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#85 0x00007f66cc9b2b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#86 0x00007f66d324404f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#87 0x00007f66d31ed9ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#88 0x00007f66d31f613c in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#89 0x00005633ddd46d26 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:164

Comment 1 Wegwerf 2017-02-18 15:04:06 UTC

I cannot reproduce, and I work a lot with title clips and different fonts. What MLT version do you have installed? I strongly suspect this to be a distribution package issue ... maybe because I just had a nasty experience in upgrading Radpbian from Jessie to Stretch.

Comment 2 Aleksey Samoilov 2017-02-19 16:09:43 UTC

(In reply to Wegwerf from comment #1)
> I cannot reproduce, and I work a lot with title clips and different fonts.
> What MLT version do you have installed? I strongly suspect this to be a
> distribution package issue ... maybe because I just had a nasty experience
> in upgrading Radpbian from Jessie to Stretch.

I wrote to Debian's Kdenlive maintainer https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855042

MLT version is 6.4.1