--- AbstractComponent.java.orig	2015-04-16 16:37:37.000000000 +0200
+++ AbstractComponent.java	2015-04-16 16:39:04.000000000 +0200
@@ -2551,8 +2551,9 @@
 		if (_auxinf != null && _auxinf.listeners != null)
 			for (Iterator<List<EventListenerInfo>> it = CollectionsX.comodifiableIterator(_auxinf.listeners.values());
 			it.hasNext();)
-				for (EventListenerInfo li: it.next())
-					didActivate(li.listener);
+				for (Iterator<EventListenerInfo> itli = CollectionsX.comodifiableIterator(it.next());
+						itli.hasNext();)
+					didActivate(itli.next().listener);
 
 		for (AbstractComponent p = (AbstractComponent)getFirstChild();
 		p != null; p = p._next)