When _if receives an empty List, it doesn't do *anything*

(Bug, Closed -> Misunderstanding, Priority: Critical, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Functions
Summary: Gah -- and here I thought I finally had _if working entirely correctly.
Recipe is:
Person._instances ->
  _filter(false) ->
  *_if(true, ""It is empty!"", ""It is non-empty!"")
This should print "It is empty!". But it prints nothing at all...