This is actually a real regression. 2.2.0-0ubuntu1~ubuntu16.04.1~ppa2 from the juju/stable PPA exhibits the bug, but charm 2.1.1-0ubuntu1 does not.
This is actually a real regression. 2.2.0-0ubuntu1~ ubuntu16. 04.1~ppa2 from the juju/stable PPA exhibits the bug, but charm 2.1.1-0ubuntu1 does not.