[news.eclipse.platform] [DataBinding] JavaBeansObservable not updating

["Masroor Ahmad" <masroor.ahmad@xxxxxxxxxxxxxxxxxxxx>]

Hello,
during development with the databinding framework I found a strange 
behaviour of the JavaBeansObservable (M20070822-0800):

Suppose we run the following simple code:

ModelBean modelBean = new ModelBean();
ModelBean targetBean = new ModelBean();

IObservableList modelBeanObservableList = 
BeansObservables.observeList(Realm.getDefault(), modelBean, "list", 
String.class);
IObservableList targetBeanObservableList = 
BeansObservables.observeList(Realm.getDefault(), targetBean, "list", 
String.class);

DataBindingContext bindingContext = new DataBindingContext();
bindingContext.bindList(targetBeanObservableList, modelBeanObservableList, 
null, null);

modelBean.add("Str 1");
modelBean.clear();
targetBean.add("Str 2");
for(Object o : modelBean.getList()){
 System.out.println(o);
}

ModelBean has a simple array list containing strings and clear() resets the 
list. Any other modification of the list can be imagined.
One would expect the console to output: "Str2". But surprisingly there is no 
output at all - the model was not updated.
When I debugged the code of JavaBeansObservable I found out the place, where 
the underlying writeableList is updated:

public void add(int index, Object element) {
...
 wrappedList.add(index, element);
...
}

But this line throws an exception (UnsupportedOperationException?) as 
wrappedList is not of type ArrayList but Arrays$ArrayList.

I question myself, what did I wrong?

Nice Greetings,
Masroor