libqt5xcbqpa5 SIGSEGV crashes sporadically at QXcbWindow::handleClientMessageEvent

Program received signal SIGSEGV, Segmentation fault.
0x00007fffe1a6e94f in QXcbWindow::handleClientMessageEvent (this=0x555555da6f80, event=0x7fffd8003e00) at qxcbwindow.cpp:1942
1942    qxcbwindow.cpp: No such file or directory.
(gdb) bt
#0  0x00007fffe1a6e94f in QXcbWindow::handleClientMessageEvent (this=0x555555da6f80, event=0x7fffd8003e00) at qxcbwindow.cpp:1942
#1  0x00007fffe1a59b2b in QXcbConnection::handleXcbEvent (this=this@entry=0x555555b9bdd0, event=event@entry=0x7fffd8003e00)
    at qxcbconnection.cpp:1066
#2  0x00007fffe1a5a053 in QXcbConnection::processXcbEvents (this=0x555555b9bdd0) at qxcbconnection.cpp:1502
#3  0x00007ffff2e777f1 in QObject::event (this=0x555555b9bdd0, e=<optimized out>) at kernel/qobject.cpp:1239
#4  0x00007ffff373c9dc in QApplicationPrivate::notify_helper (this=this@entry=0x555555b91110, receiver=receiver@entry=0x555555b9bdd0,
    e=e@entry=0x7fffd80035b0) at kernel/qapplication.cpp:3716
#5  0x00007ffff3741ea6 in QApplication::notify (this=0x7fffffffdc00, receiver=0x555555b9bdd0, e=0x7fffd80035b0)
    at kernel/qapplication.cpp:3499
#6  0x00007ffff2e47dbb in QCoreApplication::notifyInternal (this=0x7fffffffdc00, receiver=0x555555b9bdd0,
    event=event@entry=0x7fffd80035b0) at kernel/qcoreapplication.cpp:965
#7  0x00007ffff2e4a1b6 in QCoreApplication::sendEvent (event=0x7fffd80035b0, receiver=<optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#8  QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x555555b8dbf0)
    at kernel/qcoreapplication.cpp:1593
#9  0x00007ffff2e4a698 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0)
    at kernel/qcoreapplication.cpp:1451
#10 0x00007ffff2e9e163 in postEventSourceDispatch (s=0x555555bc2d50) at kernel/qeventdispatcher_glib.cpp:271
#11 0x00007ffff08bdfe7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff08be240 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ffff08be2ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007ffff2e9e56f in QEventDispatcherGlib::processEvents (this=0x555555bc2aa0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#15 0x00007ffff2e4554a in QEventLoop::exec (this=this@entry=0x7fffffffdb60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#16 0x00007ffff2e4d62c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#17 0x0000555555671736 in main ()