Form inside forEach/ui:repeat not working

Question

I am having some trouble with forms inside both forEach and ui:repeat. The action associated with the commandButton does not seem to be invoked at all, the page just refreshes. h:messages is not displaying any messages either.

The code

<c:forEach items="#{newsController.newsList}" var="news" >
     <h:form>
         <h:inputText value="#{newsController.comment.text}" />
         <h:commandButton value="Post comment" action="#{newsController.postComment(news.id)}" />
     </h:form>
</c:forEach>

The form is working as expected if i place it outside the forEach or ui:repeat tag.

The postComment method

public String postComment(int newsId){
    News news = newsEJB.getById(newsId);

    comment.setCreatedAt(new Date());
    comment.setNews(news);
    commentEJB.persist(comment);

    return "news-detail.xhtml?faces-redirect=true&includeViewParams=true";
}