Bug 426494

Application: kdenlive (20.04.3)

Qt Version: 5.15.0
Frameworks Version: 5.73.0
Operating System: Linux 5.7.14-1-MANJARO x86_64
Windowing system: X11
Distribution: Manjaro Linux

-- Information about the crash:
I had a 1920x1080x29.60 video clip with four effects on it: Color Effect, RGB Noise, RGB adjustment and Rgbashift. Then I split the said clip. When I tried to remove the last effect (Rgbashift) from the latter of the resulting clips, kdenlive crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f9ae674fe6b in QWidget::update(QRect const&) () at /usr/lib/libQt5Widgets.so.5
#5  0x00007f9ae674fffb in QWidget::update() () at /usr/lib/libQt5Widgets.so.5
#6  0x00007f9ad4cf23a6 in Kvantum::Style::advanceProgressbar() () at /usr/lib/qt/plugins/styles/libkvantum.so
#7  0x00007f9ae516da26 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9ae5171a9b in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#9  0x00007f9ae516310f in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007f9ae6725702 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f9ae51367ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007f9ae518e6b5 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#13 0x00007f9ae518ef62 in  () at /usr/lib/libQt5Core.so.5
#14 0x00007f9ae052243c in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#15 0x00007f9ae05701d9 in  () at /usr/lib/libglib-2.0.so.0
#16 0x00007f9ae0521221 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#17 0x00007f9ae518f331 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#18 0x00007f9ae513513c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f9ae513d5c4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#20 0x0000560587fa19af in  ()
#21 0x00007f9ae49c1002 in __libc_start_main () at /usr/lib/libc.so.6
#22 0x0000560587fa951e in _start ()
[Inferior 1 (process 6167) detached]

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