Launching a new tab in the web browser then trying to type into the address bar crashes the built-in browser for some users, sending them back to the device's home screen.
People around the world have posted messages to Twitter, Reddit and Apple forums complaining about the problem.
The issue appears to be related to the browser's search suggestions feature, and a temporary fix involves going into the settings menu to turn off Safari suggestions.
Not all phones and computers appear to be affected by the bug. It is unclear whether the problem is related to an update for iOS which was released earlier this week.