It is a popular target for "macOS Mojave Patcher" tools used to run Mojave on officially unsupported Macs. Reported Issues & Troubleshooting
While designed for stability, users on some older hardware (like 2012–2015 iMacs with 5400 RPM hard drives) reported slow performance or "beach balling" after upgrading. macOS Mojave 10.14.3 (18D42)
This update primarily addressed security vulnerabilities, including a fix for a major FaceTime eavesdropping bug (Group FaceTime security flaw). It is a popular target for "macOS Mojave
This version is no longer receiving security updates and is considered an older legacy release. Key Features & Changes macOS Mojave 10.14.3 (18D42)