JS error when right-clicking on issue (not parent swim lane) in Work mode

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Details

Exception: ReferenceError: event is not defined
Resource: https://gdog.jira-dev.com/s/en_US-spn54a-1988229788/6096/23/7baeb8555fadb364c18718e402c1eef8/_/download/contextbatch/js/gh-rapid/batch.js
Line: 3650

Environment
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:14.0) Gecko/20100101 Firefox/14.0.1