Manage Rapid Boards throws Cannot bind new shortcut Exception

When having GreenHopper 5.10.6 and Atlassian Developer Toolbox 1.2 enabled in JIRA, you get the following error when trying to Manage Rapid Boards:

An exception occurred

Please try refreshing the page, or contact your administrator / Atlassian Support if the problem continues.
Details

Exception: Error: Cannot bind new shortcut "dt" due to conflict with existing shortcut "d"
Resource: http://ttsupportvm.local:8511/jira511/s/en_USbj8ss5/772/3/1/_/download/superbatch/js/batch.js
Line: 519