Comment 1 for bug 1552867

Horizon relies on Django's javascript_catalog view to get translated javascript. It looks like translations aren't included for British English or Australian English.

You can check this by changing your current langauge in Horizon then navigating to
[YOUR_WEBROOT]/i18n/js/horizon+openstack_dashboard/

Notice that non-English views include a catalog. English views don't. This isn't right. It seems this is probably a Django problem.

Specifically, this looks suspicious
https://github.com/django/django/blob/master/django/views/i18n.py#L212