ListRest with includeEmptyValues gives unexpected result

I believe I've encountered a bug in Coldfusion 9 and 10.  Whenever includeEmptyValues (the third parameter) of ListRest is set to true it appears to return the entire list with no elements removed.

I've verified this behaviour with the following test.

<CFSET olst = 'a quick red fox jumped over the lazy brown dog'>

<CFSET rlst = ListRest(olst, ' ', true)>

<CFDUMP var="#rlst#">

The result is "a quick red fox jumped over the lazy brown dog".