In reply to Jonas Sandström.

None of my clients were affected. They all, except one, auto updated within hours of the release. Because of my monitoring of all client sites, the one with an update problem, due to "disk full", was fixed and then updated manually after 12 hours. I have a panel showing the version number and other info for all my client's sites. Can't run my business without that.

So, if you are a serious WordPress professional and site maintainer, you observe that all your client sites are immediately updated after a minor (security most) release. Did you turn off auto updates?

WP Tavern has previously had long discussions on the topic of automated updates being turned on as default.