Product Version = NetBeans IDE Dev (Build 201109060600)
Operating System = Windows XP version 5.1 running on x86
Java; VM; Vendor = 1.7.0
Runtime = Java HotSpot(TM) Client VM 21.0-b17

Let's assume your writing a loop within a facelets page. You keyed in the first line and after the ">" Netbeans inserts the closing tag automatically. Next you type "#{}"
<ui:repeat value="#{editUserMaintenance.topics}" var="topic">
       #{}  <----- this is your last input
</ui:repeat>

At this point autocomplete opens and offers you "topic". And if you've choosen topic you'll see the methods etc. Everythings is quite fine.

No delete the lines above and use forEach to build up the loop.

<c:forEach items="#{editUserMaintenance.topics}" var="topic">
       #{}  <----- this is your last input
</c:forEach>

NB offers no automatic autocompletion. Nor at this point, neither after inserting "topic." manually. After pressing {Ctrl}{Space} it offers the wrong content for autocompletion.
And due to a JSF design problem, forEach is the more important loop statement. (see http://blog.mueller-bruehl.de/en/programming/jsf-insert-a-variable-count-od-files/. Switch to German version for an explanating comment)