The Safari 14 update, which has been made available to macOS Mojave users ahead of the macOS Big Sur public release - which comes with the new Safari pre-installed - has also made Apple’s browser stop working for some users. Customers reported that their machines were constantly slowing down for no reason, along with other errors throughout the system. Macintosh, the Mojave 2020-005 Security Update released in September has caused some serious problems for Mac users. Today’s update also relaunches Safari 14, which was released last month for macOS Mojave users but then pulled out after causing bugs for some users.Īs reported by Mr. Apple today released a new macOS Mojave 10.14.6 supplemental update to fix several issues that could slow down the Mac.