Application: kwin_x11 (5.19.5)

Qt Version: 5.15.1
Frameworks Version: 5.74.0
Operating System: Linux 5.8.10-arch1-1 x86_64
Windowing system: X11
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:

I was using alt-tab to switch between two opera browser windows firefox is also open and I am using Deepin desktop environment, this is a regular occurance

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f970bf28133 in QXcbWindow::setGeometry(QRect const&) () at /usr/lib/libQt5XcbQpa.so.5
#5  0x00007f970c06afcf in deepin_platform_plugin::DPlatformWindowHelper::setNativeWindowGeometry(QRect const&, bool) () at /usr/lib/qt/plugins/platforms/libdxcb.so
#6  0x00007f970c06b4cf in deepin_platform_plugin::DPlatformWindowHelper::updateContentWindowGeometry() () at /usr/lib/qt/plugins/platforms/libdxcb.so
#7  0x00007f970c06c0f1 in deepin_platform_plugin::DPlatformWindowHelper::eventFilter(QObject*, QEvent*) () at /usr/lib/qt/plugins/platforms/libdxcb.so
#8  0x00007f9711eeea43 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#9  0x00007f97129b6741 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#10 0x00007f9711eeecda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#11 0x00007f97122ca993 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#12 0x00007f971229ebac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#13 0x00007f970bf36386 in  () at /usr/lib/libQt5XcbQpa.so.5
#14 0x00007f9711eed65c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#15 0x00007f9711ef5af4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#16 0x000055791133f412 in  ()
#17 0x00007f9711893152 in __libc_start_main () at /usr/lib/libc.so.6
#18 0x000055791133f94e in _start ()
[Inferior 1 (process 727) detached]

Possible duplicates by query: bug 363580, bug 351257.

Reported using DrKonqi