@ben Sorry to hear that. And you’re positive you also lifted the lock for that specific version of the app under the Security settings as well right?
Please check that this is the exact build you used: https://drive.google.com/open?id=1UlVt4lkdyuY4k9uz6a6jFaoIYdmBLo6I
Other than that I’ll ask one of the developers to review your case directly, so hopefully we can ask you to test a bit more in order to fix this issue for macOS users.
Meanwhile we look into though, as promised here’s a list on alternative animation software that you can try out: