Wayland: Navigating from a submenu to another top level menu closes the window

#0 0x00007f1fbb821d77 in wl_proxy_marshal () from /usr/lib/libwayland-
client.so.0
#1 0x00007f1fb6e35d33 in
QtWaylandClient::QWaylandAbstractDecoration::contentImage() () from
/usr/lib/libQt5WaylandClient.so.5
#2 0x00007f1fb6e1bbc0 in
QtWaylandClient::QWaylandShmBackingStore::updateDecorations() () from
/usr/lib/libQt5WaylandClient.so.5
#3 0x00007f1fb6e1c1b1 in
QtWaylandClient::QWaylandShmBackingStore::flush(QWindow*, QRegion const&,
QPoint const&) () from /usr/lib/libQt5WaylandClient.so.5
#4 0x00007f1fbae7a84d in QBackingStore::flush(QRegion const&, QWindow*,
QPoint const&) () from /usr/lib/libQt5Gui.so.5
#5 0x00007f1fbb2d9fbd in ?? () from /usr/lib/libQt5Widgets.so.5
#6 0x00007f1fbb2db995 in ?? () from /usr/lib/libQt5Widgets.so.5
#7 0x00007f1fbb2dd008 in ?? () from /usr/lib/libQt5Widgets.so.5
#8 0x00007f1fbb2dd379 in ?? () from /usr/lib/libQt5Widgets.so.5
#9 0x00007f1fbb2f5337 in QWidgetPrivate::syncBackingStore() () from
/usr/lib/libQt5Widgets.so.5
#10 0x00007f1fbb30dc39 in QWidget::event(QEvent*) () from
/usr/lib/libQt5Widgets.so.5
#11 0x00007f1fbb41b405 in QMainWindow::event(QEvent*) () from
/usr/lib/libQt5Widgets.so.5
#12 0x00007f1fbb2ccda4 in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib/libQt5Widgets.so.5
#13 0x00007f1fbb2d43c1 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/libQt5Widgets.so.5
#14 0x00007f1fba901849 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/libQt5Core.so.5
#15 0x00007f1fba904928 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#16 0x00007f1fba957394 in ?? () from /usr/lib/libQt5Core.so.5
#17 0x00007f1fb970d90f in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#18 0x00007f1fb970f869 in ?? () from /usr/lib/libglib-2.0.so.0
#19 0x00007f1fb970f8ae in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#20 0x00007f1fba956969 in QEventDispatcherGlib::processEvents(QFlags<QEvent
Loop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#21 0x00007f1fba9004dc in
QEventLoop::exec&#40;QFlags<QEventLoop::ProcessEventsFlag>&#41;
() from /usr/lib/libQt5Core.so.5
#22 0x00007f1fba908596 in QCoreApplication::exec&#40;&#41; () from
/usr/lib/libQt5Core.so.5
#23 0x00005583c5a2d3f0 in main (argc=1, argv=0x7ffe4a71d098) at testapp.cc:24