Promise.all inconsistency

all.js

var first;
var P = function(executor) {
  if (!first) {
    return new Promise(executor);
  }
  first = false;
  return new Promise(function(_, reject) {
    executor(function() { throw 1; }, reject);
  });
};
P.resolve = Promise.resolve;

first = true;
Promise.all.call(P, []) // this promise is rejected
  .then(print.bind(null, 'resolve1'), print.bind(null, 'reject1'));

first = true;
Promise.all.call(P, [1]) // this promise is never settled
  .then(print.bind(null, 'resolve2'), print.bind(null, 'reject2'));

// Consistent result:
//     reject1 1
//     reject2 1

// Actual result (and in accordance with latest specification):
//     reject1 1