Q + when.js infinite loop, take 2

loop2.js

// `npm install q when`
// `node test.js`
// watch CPU and memory using top

var q, when, d;

q = require('./node_modules/q');
when = require('./node_modules/when');

// Using either gives the same behavior in all cases I've tried
d = q.defer();
//d = when.defer();

// It seems like the next two lines should produce equivalent results,
// but they don't.  Using q.when() causes an infinite loop, but using
// d.promise.promiseSend() works.

// Causes infinite loop
q.when(d.promise, when.resolve);

// Works correctly
//d.promise.promiseSend('when', when.resolve);

d.resolve(1).then(console.log, console.error);