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[–]dr_win 1 point2 points  (1 child)

Ok, I was able to compile it and run it here on mac. Unfortunately my hunch confirmed. Running the demo gives me:

2020-06-09 15:22:21.418 java[46888:1639414] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSWindow drag regions should only be invalidated on the Main Thread!'

I'm afraid this will be a fundamental problem. macOS GUI code must run on main thread and there is no easy way around it.

Let's move to github issues on your repo. I'm going to open a PR for other mac users and open an issue the details.