False positive for "!" in disallowSpaceAfterPrefixUnaryOperators

[Krinkle]

Warning "Operator ! should stick to operand at example.js" keeps popping up no matter what I do to the offending line.

It looks like a false positive to me (perhaps the code doesn't account for the possibility of parenthesis to appear in that location?).

Warning:

Operator ! should stick to operand at example.js :
     2 |/*global X */
     3 |function foo( a, b ) {
     4 | if ( !( b instanceof X.Blue ) && !X.Object.isPlainObject( b ) ){
--------------^
     5 |  return;
     6 | }
>> 1 code style errors found!

example.js:

/*jshint unused:false */
/*global X */
function foo( a, b ) {
    if ( !( b instanceof X.Blue ) && !X.Object.isPlainObject( b ) ){
        return;
    }

    return a;
}

.jscs.json:

{
    "requireCurlyBraces": ["if", "else", "for", "while", "do"],
    "requireSpaceAfterKeywords": ["if", "else", "for", "while", "do", "switch", "return"],
    "disallowSpaceAfterPrefixUnaryOperators": ["++", "--", "+", "-", "~", "!"]
}

I've tried removing and adding all kinds of spaces to try and see if that satisfies it, but it seems impossible without changing anything other than whitespace.