Reactive Data Source in METEOR#1.3-modules-beta.6 and React - meteor

Question

I am building a Chat app in Meteor 1.3, ES6 and React.
I have 3 collections:
1. People: Who has an array of conversations that the person are involved.
2. Conversations: That also have the people that are involved.
3. Messages: That has a conversation_id field to relate to second collection.
So I am using reywood:publish-composite package, to manage the reactive joins:
=> Get Conversations for this People (user)
=> Get the Messages of all the Conversations of this user
=> Filter messages according to the conversation selected (a react state)
I am also using the package React-Komposer from Kadira.
This is my code:
// publications.js
Meteor.publishComposite('compositeChat', function (people_id) {
return {
find() {
return Collections.People.find({_id: people_id});
},
children: [
{
find(people) {
return Collections.Conversations.find(
{_id: {$in: people.conversations }},
{sort: {'lastMessage.date': -1}}
);
}
},
{
find(people) {
return Collections.Messages.find(
{conversation_id: {$in: people.conversations }},
{sort: {date: 1}}
);
}
},
{
find(people) {
return Collections.People.find(
{_id: {$in: people.contacts }}
);
}
}
]
};
});
// AppContainer.js
import {composeAll, composeWithTracker} from 'react-komposer';
import AppWrapper from '../AppWrapper.jsx';
import * as Collections from '../../../../lib/collections/collections.js';
function composeChat(props, onData) {
let user;
if (!Meteor.userId()) {
user = 'qXSWv64qKaEPAu5yp';
} else {
user = Meteor.userId();
//console.log('Meteor.userId()', Meteor.userId());
}
const
chatSub = Meteor.subscribe('compositeChat', user);
if (chatSub.ready()) {
const chatData = {
chatLoading:
!chatSub.ready(),
myUserData:
Collections.People.findOne({_id: user}),
myContacts:
Collections.People.find(
{_id: { $ne: user}}, { sort: { name: 1 } }
).fetch(),
myConversations:
Collections.Conversations.find(
{}, { sort: { date: -1 } }
).fetch(),
noConversationContacts:
(function () {
return myFunctions.chat.noConversationContacts(
Collections.People.find(
{_id: { $ne: user}}
).fetch(),
Collections.Conversations.find().fetch()
);
}()),
myMessages:
Collections.Messages.find(
{}, {sort: {'lastMessage.date': -1}}
).fetch(),
myOtherPeople:
(function () {
return myFunctions.chat.getTheOtherPeople(
Collections.Conversations.find().fetch(),
user
);
}()),
unreaded:
(function () {
return myFunctions.chat.countUnreadedMessages(
user,
Collections.Conversations.find().fetch(),
Collections.Messages.find().fetch()
);
}())
};
console.log('chatData', chatData);
onData(null, {chatData});
}
}
export default composeWithTracker(composeChat)(AppWrapper);
The problem is: When new message is added, I am not getting the update in the UI, but the data is there (in Mongo), so if I refresh the page, I get the new messages...
In my previous version of the app (Meteor 1.2) this reactive joins worked perfectly.
What could be wrong?
Does publish-composite package not work with Meteor 1.3?
Does publish-composite can't be used with React-Komposer?
Do I have to mix them in other way?
Is there another option (with or without this packages) to manage reactive joins in Meteor 1.3?
Thanks