No sooner had we reported that Microsoft will adopt a "rolling update" model for Windows 10...
...than we received notice of Apple's latest "rolling update" for its Safari browser.
What to do?
Simple: head to Apple Menu | App Store... | Updates and make sure you have the latest version of Safari.
To check your Safari version, run the browser and use Safari | About Safari, or open a Finder window and go to Applications| Safari.app.