The red "back" button in the options menu now takes you back to the level selection instead of quitting the application as it did previously. Hunting some achievements now should be more pleasant. Sorry it took this long! :)
Update notes for May 20
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 6730037 · public branch
Steam updated · First observed