Sporadic error message (Failed to post a message (Invalid Window Handle))

The following minimal code example sporadically outputs the error message:

"QEventDispatcherWin32::wakeUp: Failed to post a message (Invalid window handle.)"

However, this message appears somewhat non-determinstically.

In my setup (Windows, msvc2019, Qt 5.15.0) it occurs approximately one out of ten times.

This also occurs in a big project and leads to annoying log messages.

Minimal Code Example:

#include <qdbusconnectioninterface.h>

int main()

{

    QDBusConnection::sessionBus().registerService("test");

    return 0;

}