This looks a quite likely scenario. But then we still don't know what they fixed, was is the incorrect configuration or the underlying bug? I would expect the

This looks a quite likely scenario. But then we still don't know what they fixed, was is the incorrect configuration or the underlying bug? I would expect the former instead of the latter, because it is probably not very difficult or dangerous to change that specific configuration while fixing bugs in the code seems riskier and would probably take more time for testing. We'll see if they will publish a post-mortem. It has become more or less a normal custom these days (and they are frequently quite interesting).