In the UI configuration file, the URL name for the Zaqar websocket changed from "zaqar_websocket_url" to "zaqar-websocket" in http://git.openstack.org/cgit/openstack/tripleo-ui/commit/?id=e9765d . The template in the puppet configuration at http://git.openstack.org/cgit/openstack/puppet-tripleo/tree/templates/ui/tripleo_ui_config.js.erb wasn't updated though, so if a user just uncomments and changes the URL, it won't get picked up and things will break.
On a default install the UI still works, because except for Keystone the services URLs are obtained from the catalogue. This causes issues when overriding (which is frequently needed when using a virtualised environment and tunnelling to the UI).
https:/ /review. openstack. org/382875