Any working documentation? Does this work with contextual modules?

This module was designed to work with contextual modules.

Just to confirm, based on your screenshot you are testing that those modules are enabled/disabled in the staging environment on pantheon?

I just pushed a fix for a notice that may or may not have effected environment matching. Either way, it's good to clean up notices.

If you pull the latest version, that might help with the issue you're having.