In a support document published today, Apple said it is aware of an issue where the recently released Rapid Security Responses for iOS 16.5.1, iPadOS 16.5.1, and macOS 13.4.1 might prevent some websites from displaying properly.
The affected Rapid Security Responses are labeled as iOS 16.5.1 (a), iPadOS 16.5.1 (a), and macOS 13.4.1 (a). Apple said new Rapid Security Responses with a (b) suffix will be available soon to address this issue. Users who do not wish to wait have the option to uninstall the (a) versions by following the steps outlined by Apple below.
Read more at MacRumors.com