Just tried it for MacOS X. I didn't get past its request for permission to access keystrokes from all applications. I denied it and then even the menu shortcuts didn't work.
Maybe need some fixes to the way they handle the event code on MacOS.
Hmmm.... I may have self-signed. I distributed the game on Steam but my handful of sales may have all been Windows, ha ha. My own downloading and testing didn't show any prompt - but would it on my own devices? I don't know.
Fantastic port, with many of the things I wished Elite could do and show when I was 11. I am tempted to brush off my almost-dormant coding skills, in fact.
https://wiki.alioth.net/index.php/Oolite_Main_Page