**Browser:** Chrome Version 49.0.2623.87 (64-bit)
**OS:** Any (I've reproduced on Ubuntu and OS X)
**Steps to reproduce:**
# Go to this page to create a new HeraldRule: https://secure.phabricator.com/herald/edit/?content_type=differential&rule_type=personal
# Actions are not displayed and JS error is thrown: {F1186338 size=full}
No problems with Firefox, Chrome Version 48.* and earlier.