ZF-3881: Zend_Form::setDefaults( array $defaults ) does not reset the values null
the phpdoc says: "If an element's name is not specified as a key in the array, its value is set to null."
well it doesn't do what it says. I suppose there is a missing else clause in the first if statement of this method, where it should call the setDefault( $name, null ) method to reset the form elements value
this is unless I got something misunderstood.