Qt applications crash when dragging to a different X11 Screen

#0  0x00007ffff68146b2 in QScopedPointer<QPlatformScreenPrivate, QScopedPointerDeleter<QPlatformScreenPrivate> >::get (this=0x8)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/tools/qscopedpointer.h:112
#1  0x00007ffff6814379 in qGetPtrHelper<QScopedPointer<QPlatformScreenPrivate, QScopedPointerDeleter<QPlatformScreenPrivate> > const> (ptr=...)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/global/qtclasshelpermacros.h:79
#2  0x00007ffff6813ece in QPlatformScreen::d_func (this=0x0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qplatformscreen.h:45
#3  0x00007ffff6812ede in QPlatformScreen::screen (this=0x0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qplatformscreen.cpp:115
#4  0x00007ffff2b9b72d in QXcbDrag::move (this=0x5555555dd550, globalPos=..., b=..., mods=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbdrag.cpp:354
#5  0x00007ffff6ccce49 in QBasicDrag::eventFilter (this=0x5555555dd550, o=0x5555555fd5e0, e=0x7fffffffb180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qsimpledrag.cpp:123
#6  0x00007ffff2b9a016 in QXcbDrag::eventFilter (this=0x5555555dd550, o=0x5555555fd5e0, e=0x7fffffffb180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbdrag.cpp:137
#7  0x00007ffff60989fa in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=0x555555588340, receiver=0x55555559d5c0, event=0x7fffffffb180)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1261
#8  0x00007ffff7a80b66 in QApplicationPrivate::notify_helper (this=0x555555588340, receiver=0x55555559d5c0, e=0x7fffffffb180)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:3258
#9  0x00007ffff7a80aba in QApplication::notify (this=0x7fffffffca20, receiver=0x55555559d5c0, e=0x7fffffffb180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:3238
#10 0x00007ffff6098755 in QCoreApplication::notifyInternal2 (receiver=0x55555559d5c0, event=0x7fffffffb180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1142
#11 0x00007ffff609925f in QCoreApplication::sendSpontaneousEvent (receiver=0x55555559d5c0, event=0x7fffffffb180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1597
#12 0x00007ffff67aec99 in QGuiApplicationPrivate::processMouseEvent (e=0x555555599180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qguiapplication.cpp:2327
#13 0x00007ffff67ae00c in QGuiApplicationPrivate::processWindowSystemEvent (e=0x555555599180) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qguiapplication.cpp:2071
#14 0x00007ffff6863f9a in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qwindowsysteminterface.cpp:1114
#15 0x00007ffff2b47210 in xcbSourceDispatch (source=0x5555555de0f0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:57
#16 0x00007ffff5527166 in ?? () from /usr/lib64/libglib-2.0.so.0
#17 0x00007ffff552a287 in ?? () from /usr/lib64/libglib-2.0.so.0
#18 0x00007ffff552a8b0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#19 0x00007ffff5ca2e50 in QEventDispatcherGlib::processEvents (this=0x5555555d7e70, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#20 0x00007ffff2b4746e in QXcbGlibEventDispatcher::processEvents (this=0x5555555d7e70, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:96
#21 0x00007ffff609f553 in QEventLoop::processEvents (this=0x7fffe4003590, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventloop.cpp:100
#22 0x00007ffff609f877 in QEventLoop::exec (this=0x7fffe4003590, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventloop.cpp:182
#23 0x00007ffff6ccd422 in QBasicDrag::drag (this=0x5555555dd550, o=0x5555556220d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qsimpledrag.cpp:176
#24 0x00007ffff6cc6bc6 in QDragManager::drag (this=0x55555560d820, o=0x5555556220d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qdnd.cpp:81
#25 0x00007ffff6cc74fc in QDrag::exec (this=0x5555556220d0, supportedActions=..., defaultDropAction=Qt::CopyAction) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qdrag.cpp:248
#26 0x000055555555871a in DragWidget::mousePressEvent (this=0x5555555e2470, event=0x7fffffffbc10) at /tmp/draggableicons/dragwidget.cpp:125
#27 0x00007ffff7abd74a in QWidget::event (this=0x5555555e2470, event=0x7fffffffbc10) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qwidget.cpp:9021
#28 0x00007ffff799148d in QFrame::event (this=0x5555555e2470, e=0x7fffffffbc10) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/widgets/qframe.cpp:521
#29 0x00007ffff7a80cc8 in QApplicationPrivate::notify_helper (this=0x555555588340, receiver=0x5555555e2470, e=0x7fffffffbc10)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:3287
#30 0x00007ffff7a7e8f5 in QApplication::notify (this=0x7fffffffca20, receiver=0x5555555e65b0, e=0x7fffffffbf40) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:2765
#31 0x00007ffff6098755 in QCoreApplication::notifyInternal2 (receiver=0x5555555e65b0, event=0x7fffffffbf40) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1142
#32 0x00007ffff609925f in QCoreApplication::sendSpontaneousEvent (receiver=0x5555555e65b0, event=0x7fffffffbf40) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1597
#33 0x00007ffff7a7d3bc in QApplicationPrivate::sendMouseEvent (receiver=0x5555555e65b0, event=0x7fffffffbf40, alienWidget=0x5555555e65b0, nativeWidget=0x7fffffffca50, buttonDown=0x7ffff7eaee90 <qt_button_down>, lastMouseReceiver=...,
    spontaneous=true, onlyDispatchEnterLeave=false) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:2347
#34 0x00007ffff7ad230e in QWidgetWindow::handleMouseEvent (this=0x5555555fd5e0, event=0x7fffffffc4d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qwidgetwindow.cpp:649
#35 0x00007ffff7ad0763 in QWidgetWindow::event (this=0x5555555fd5e0, event=0x7fffffffc4d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qwidgetwindow.cpp:263
#36 0x00007ffff7a80cc8 in QApplicationPrivate::notify_helper (this=0x555555588340, receiver=0x5555555fd5e0, e=0x7fffffffc4d0)
    at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:3287
#37 0x00007ffff7a80aba in QApplication::notify (this=0x7fffffffca20, receiver=0x5555555fd5e0, e=0x7fffffffc4d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:3238
#38 0x00007ffff6098755 in QCoreApplication::notifyInternal2 (receiver=0x5555555fd5e0, event=0x7fffffffc4d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1142
#39 0x00007ffff609925f in QCoreApplication::sendSpontaneousEvent (receiver=0x5555555fd5e0, event=0x7fffffffc4d0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1597
#40 0x00007ffff67aec99 in QGuiApplicationPrivate::processMouseEvent (e=0x555555596a20) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qguiapplication.cpp:2327
#41 0x00007ffff67ae00c in QGuiApplicationPrivate::processWindowSystemEvent (e=0x555555596a20) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qguiapplication.cpp:2071
#42 0x00007ffff6863f9a in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qwindowsysteminterface.cpp:1114
#43 0x00007ffff2b47210 in xcbSourceDispatch (source=0x5555555de0f0) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:57
#44 0x00007ffff5527166 in ?? () from /usr/lib64/libglib-2.0.so.0
#45 0x00007ffff552a287 in ?? () from /usr/lib64/libglib-2.0.so.0
#46 0x00007ffff552a8b0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#47 0x00007ffff5ca2e50 in QEventDispatcherGlib::processEvents (this=0x5555555d7e70, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#48 0x00007ffff2b4746e in QXcbGlibEventDispatcher::processEvents (this=0x5555555d7e70, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:96
#49 0x00007ffff609f553 in QEventLoop::processEvents (this=0x7fffffffc990, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventloop.cpp:100
#50 0x00007ffff609f877 in QEventLoop::exec (this=0x7fffffffc990, flags=...) at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qeventloop.cpp:182
#51 0x00007ffff6099040 in QCoreApplication::exec () at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/corelib/kernel/qcoreapplication.cpp:1486
#52 0x00007ffff67ad93e in QGuiApplication::exec () at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/gui/kernel/qguiapplication.cpp:1926
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#53 0x00007ffff7a7dcb9 in QApplication::exec () at /usr/src/debug/dev-qt/qtbase-6.7.2-r5/qtbase-everywhere-src-6.7.2/src/widgets/kernel/qapplication.cpp:2555
#54 0x0000555555559862 in main (argc=1, argv=0x7fffffffcbb8) at /tmp/draggableicons/main.cpp:21