I played the linux build. It hung for a while and started Steam without asking me. I thought it was DRM free?
It's actually checks for steam (so you could use steam features like achievements) but it shouldn't start the steam app. So, thank you for the report.
I experience the same behavior. The application appears unresponsive to the szstem and Steam is instructed to launch the same game. and it looks like, if you resume too quickly it’ll just hand indefinetly.
I've uploaded a version without Steam client connection. I should not make any call to Steam client anymore.