Infinite loop interaction between q.js and when.js

test.js

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

var q, when;

q = require('q');
when = require('when/debug');

// Infinite loop
q.resolve(1).then(when.resolve)
	.then(console.log, console.error);

// Infinite loop
//when.resolve(1).then(q.resolve)
//	.then(console.log, console.error);

// Works correctly
//q.resolve(1).then(q.resolve)
//	.then(console.log, console.error);

// Works correctly
//when.resolve(1).then(when.resolve)
//	.then(console.log, console.error);