A pending queued promise which calls another pending queued promise will never resolve

[brian-mann]

queue = new PSemaphore;

foo = function() {
  return queue.add(function() {
    return bar()
  });
};

bar = function() {
  return queue.add(function(){})
};

foo().then(function() {
 console.log("this will never resolve or get called")
});

[samccone]

After more investigation, this is a very classic queue problem, zones should be able fix this because things will be aware who is calling what and the dependency order

For now if you increase your room count to your call queue stack depth it will work.