We are aware of issues launching the game directly from Steam for some Linux users. By all reports we currently have, launching the game directly from the executable (instead of through Steam) is a workaround for the time being. We are looking into the issue and hope to resolve it soon.
Linux Launching Issues/Workaround on 3.0.0
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 23054697 · previous_release branch
Steam updated · First observed