Apple released its new macOS on October 2nd to fix several bugs and issues that reportedly slowed down the Mac when they updated to Mojave 2020-005, the previous update. Mojave 10.14.6 is a supplemental update that comes with bug fixes and a relaunch for Safari 14, which also caused bugs for some users.
As Mr.Macintosh reported, Mojave 2020-005 Security Update was released in September and caused problems for many users. According to complaints, it slowed their Macs down, led to large increases in memory usage, and one wasn’t able to create new users, among other issues. The Safari 14 update was made available last month to macOS Mojave users ahead of the macOS Big Sur public release. It made Apple’s browsers stop working for some users and hence was pulled out soon after its release. Safari 14 will now come pre-installed with the new update.
Mojave 10.14.6 fixes both the Mojave 2020-005 Security Update’s and Safari 14’s bugs and issues. Even though Apple responded fairly quickly – the update was released on 28th September 2020 and pulled along with Safari 14.0 on 30th September 2020 – it was still bad for the company to ship out a security update which caused such issues.
You can download the update and install it through the Software Update menu in the macOS System