That's strange, thank you for the report. I think we encountered these issues before with our input system and had problems on Mac...
I'll see if I can get it working but unfortunately if it's not going to be a smaller fix I'm probably going to just need to remove the Mac build entirely.
Really sorry for the inconvenience - ty for your interest!
Unfortunately we've removed the Linux and Mac builds from the listing of the game. We had to do some strange things to make an input system support various input methods and said things do not play nice cross-platform. As most of the team has disbanded or moved onto other projects, updating this game further is not really possible any more. My sincerest apologies :(
