Memory leak when using QSystemTrayIcon on Linux

When executing the SystemTrayIcon example application (https://code.qt.io/cgit/qt/qtbase.git/tree/examples/widgets/desktop/systray?h=6.4.2) through valgrind, I can see a leaked memory originating in QDBusPlatformMenu::createMenuItem().
Looking at that code (https://github.com/qt/qtbase/blob/6.4.2/src/gui/platform/unix/dbusmenu/qdbusplatformmenu.cpp#L263) I can see a new, however the whole file has no deletes.
Is it possible to fix this? Should the example, and we, do something differently to release this memory? The valgrind error makes it look like the problem originated in our code, which is not ideal.

Thanks!

Attached example can be used to see the issue on Mac with Activity monitor. Just open Activity monitor and run the example. Then keep hitting push button to change the icon. You can observe the change in memory