I think we have the same issue, https://github.com/ValveSoftware/steam-for-linux/issues/3601
If you disable Steam Overlay for it, does it still happen?
Looks like game doesn't crashes if steam overlay is disabled.
As i thought, something in Steam Overlay causes it all to die.
Can you grab these crash dumps and upload them somewhere?
@Plagman are the three CrashIDs above not valid?
Unfortunately I don't think the server holds onto them for that long, but I will double-check on Friday as I'm currently out of the office.
After pressing Play button in Steam game starts but shortly after that Steam crashes: window, icon and its process disappears. Game continues to run but it shows black screen, its process can be killed only with SIGKILL.
Steam restarting fixes this problem.
I cannot capture the moment when Steam dies so cannot provide crash log. However, Steam created and uploaded few crash dumps just before its death:
System info: http://pastebin.com/BwUbFmRL