DeserializeJSON in Railo 3.2

In Railo 3.2, using DeserializeJSON give different result from Railo 3.1 when there is a NULL value

Example Code:

<cfsavecontent variable="jsonStr">
[

{ "hero": "Spiderman", "heroine": "Mary Jane" }

,

{ "hero": "Superman", "heroine": "Lois Lane" }

,

{ "hero": "Batman", "heroine": null }

,

{ "hero": "Captain America", "heroine": "" }

]

</cfsavecontent>
<cfdump var="#DeserializeJSON(jsonStr)#">