qWarning during Qt3D shutdown

I get a very annoying warning during shutdown of Qt3D applications. It can be reproduced by opening for instance the simple-cpp example in Qt Creator and run it in Debug mode. Close the window and creator breaks at the warning.

I attached a screenshot of Qt Creator with the stack trace.

I first noticed this when I updated 5.7.0 from git the last time, but it is still present in the final release.