Bugs in Promise.all(..) ?

I'm in the process of migrating my modules from using callbacks to promises. The code looks much tidier.

But I run into trouble with Promise.all(..)

First question: Why is there no output?

var promise = new Promise( function(resolve,reject) { resolve(); } );
Promise.all( [promise] ).then( function() { print( "never called :-(" ); } );

It works when I wrap the code into a function call:

function start() {
      var promise = new Promise( function(resolve,reject) { resolve(); } );
      Promise.all( [promise] ).then( function() { print( "called :-)" ); } );
}

start();

Second question: The results of the promises seems to be circular shifted.

function start() {
      var promiseTwo = new Promise( function(resolve,reject) { resolve(1); } )
      .then( function( n ) { return 2; } );

      var promiseFour = new Promise( function( resolve, reject ) { resolve(4); } );

      Promise.all( [promiseTwo, promiseFour] ).then( function( numbers ) {
          console.log( "expecting 2, got " + numbers[0] ); // got 4
          console.log( "expecting 4, got " + numbers[1] ); // got 2
      } );
}

start();