I do apologise for this problem, which is a crash that happens on MacOS 10.15 only with this game. It only happens on Macs with video hardware that is below the minimum requirement for the game, so far either Intel video systems or nVidia GeForce 650M.
I have lodged a new bug report on it to the developers, and attached your ticket and many other such reports to that bug report.
Despite it only happening on unsupported hardware I do hope and expect that it will be fixed, but whether that fix will make the next game patch 1.3.2 is unknown at present.
In the meantime you can revert to the game patch 1.2 in the Steam Betas tab for the game, which doesn't have this problem.