inferno: Attempting to configurable attribute of unconfigurable property error under safari 7

Observed Behaviour

Inferno is raising an Attempting to configurable attribute of unconfigurable property. error when firing event handlers in Safari 7.0.6, preventing the handler from being run.

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Expected Current Behaviour

Inferno should fire the handler

Inferno Metadata Inferno 1.3.0.rc.3 useragent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.78.2 (KHTML, like Gecko) Version/7.0.6 Safari/537.78.2