macOS High Sierra 10.13.4 Update improves the stability, performance, and security Posted 3/30/2018 at 21:35 UTC in Mac by firstname.lastname@example.org | Permalink | Tweet The macOS High Sierra 10.13.4 Update improves the stability, performance, and security of your Mac, and is recommended for all users and includes the following: Adds support for Business Chat conversations in Messages in the U.S.; Adds support for external graphics processors (eGPUs).; Fixes graphics corruption issues affecting certain apps on iMac Pro.; Allows jumping to the rightmost open tab using Command-9 in Safari.; Enables sorting of Safari bookmarks by name or URL by Control-clicking and choosing Sort By.; Fixes an issue that may prevent web link previews from appearing in Messages.; Helps protect privacy by only AutoFilling usernames and passwords after selecting them in a web form field in Safari.; Displays warnings in the Safari Smart Search field when interacting with password or credit card forms on unencrypted webpages.; Displays privacy icons and links to explain how your data will be used and protected when Apple features ask to use your personal information as well as a few more.