Crash when opening a new menu when two submenus are already open

[751811,810]  -> wl_surface@56.set_buffer_transform(0)
[751811,833]  -> wl_surface@56.commit()
[751811,898]  -> xdg_surface@104.set_window_geometry(0, 0, 230, 52)
[751812,196]  -> org_kde_kwin_appmenu_manager@20.create(new id org_kde_kwin_appmenu@107, wl_surface@56)
[751812,287]  -> org_kde_kwin_appmenu@107.set_address("", "")
[751861,274]  -> wl_shm_pool@41.destroy()
[751861,334]  -> wl_buffer@42.destroy()
[751861,950]  -> wl_shm_pool@40.destroy()
[751861,984]  -> wl_buffer@43.destroy()
[751862,618]  -> wl_shm_pool@44.destroy()
[751862,645]  -> wl_buffer@45.destroy()
[751863,266]  -> wl_shm_pool@38.destroy()
[751863,308]  -> wl_buffer@39.destroy()
[751863,451]  -> wl_shm@5.create_pool(new id wl_shm_pool@108, fd 11, 16182432)
[751863,480]  -> wl_shm_pool@108.create_buffer(new id wl_buffer@109, 0, 1932, 2094, 7728, 0)

^[[CThread 1 "kwrite" received signal SIGSEGV, Segmentation fault.
0x00007ffff539bd77 in wl_proxy_marshal () from /usr/lib/libwayland-client.so.0
(gdb) where
#0  0x00007ffff539bd77 in wl_proxy_marshal () from /usr/lib/libwayland-client.so.0
#1  0x00007fffef580767 in wl_surface_damage (wl_surface=0x0, x=0, y=0, width=972, height=30)
    at ../../include/QtWaylandClient/5.13.0/QtWaylandClient/private/../../../../../src/client/wayland-wayland-client-protocol.h:3490
#2  0x00007fffef580723 in QtWayland::wl_surface::damage (this=0x555555f58e68, x=0, y=0, width=972, height=30) at qwayland-wayland.cpp:1236
#3  0x00007fffef553b0e in QtWaylandClient::QWaylandWindow::damage (this=0x555555f58e40, rect=...) at /home/apol/devel/frameworks/qt5/qtwayland/src/client/qwaylandwindow.cpp:566
#4  0x00007fffef566dc6 in QtWaylandClient::QWaylandAbstractDecoration::contentImage (this=0x5555560525e0) at /home/apol/devel/frameworks/qt5/qtwayland/src/client/qwaylandabstractdecoration.cpp:135
#5  0x00007fffef53b0fd in QtWaylandClient::QWaylandShmBackingStore::updateDecorations (this=0x555555e03c20) at /home/apol/devel/frameworks/qt5/qtwayland/src/client/qwaylandshmbackingstore.cpp:322
#6  0x00007fffef53afbb in QtWaylandClient::QWaylandShmBackingStore::flush (this=0x555555e03c20, window=0x555555a6a120, region=..., offset=...)
    at /home/apol/devel/frameworks/qt5/qtwayland/src/client/qwaylandshmbackingstore.cpp:231
#7  0x00007ffff5e96390 in QBackingStore::flush (this=0x555555f56010, region=..., window=0x555555a6a120, offset=...) at /home/apol/devel/frameworks/qt5/qtbase/src/gui/painting/qbackingstore.cpp:249
#8  0x00007ffff63ef0dc in QWidgetBackingStore::qt_flush (widget=widget@entry=0x55555564dd00, region=..., backingStore=0x555555f56010, tlw=0x55555564dd00, widgetTextures=0x0, 
    widgetBackingStore=widgetBackingStore@entry=0x555555f5b780) at /home/apol/devel/frameworks/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:159
#9  0x00007ffff63f11f0 in QWidgetBackingStore::flush (this=this@entry=0x555555f5b780, widget=widget@entry=0x0) at /home/apol/devel/frameworks/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1381
#10 0x00007ffff63f15b2 in QWidgetBackingStore::endPaint (this=this@entry=0x555555f5b780, cleaned=..., backingStore=<optimized out>, beginPaintInfo=beginPaintInfo@entry=0x7fffffffc874)
    at /home/apol/devel/frameworks/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:363
#11 0x00007ffff63f3020 in QWidgetBackingStore::doSync (this=this@entry=0x555555f5b780) at /home/apol/devel/frameworks/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1365