I wrote a class that updates the index on publish.

using umbraco.BusinessLogic;
using umbraco.cms.businesslogic.web;
using Examine;

public class UmbracoEvents: ApplicationBase
{
  /// <summary>Constructor</summary>
  public UmbracoEvents()
  {
    Document.AfterPublish += new Document.PublishEventHandler(Document_AfterPublish);
  }

  private void Document_AfterPublish(Document sender, umbraco.cms.businesslogic.PublishEventArgs e)
  {
    // Rebuild SiteSearchIndexer
    ExamineManager.Instance.IndexProviderCollection["SiteSearchIndexer"].RebuildIndex(); // Unfortunately this doesn't index the latest change
  }
}

However it doesn't get the latest change even if it is supposed to run "after" publish. So, to make the search results up to date, I have to publish twice.

Why is that happening? I want the index to be updated when the user publish a content. Did I do anything wrong?