MacOS 10.16 is beta software, why did you "forget" to mention it ?
Apple is a multi-billion company with millions of employees, FreeCAD is an open-source project done by a handful of developers. If they want our software to work on their OS, they can pay a couple of software engineers to help out. Else, you'll be left in the dark and we'll spread the word on Internet that MacOS sucks for any serious engineering. We shall see how fast they'll come here crawling for support.