JQuery 1.5a demo bug - droppable

JQuery 1.5a demo bug - droppable


I presume that with "greedy:true" the point is that when the example
draggable is dropped on the inner droppable, the outer one shouldn't
register it too (i.e. only the inner one adds the draggable to its
list), whereas with "greedy:false" the event/registration bubbles to
the outer one too so that both end up adding the draggable to their
lists?
This isn't the behaviour I'm experiencing - "greedy:false" and
"greedy:true" both behave identically for me on Firefox 2.0.0.12/Win,
following the expected "greedy:false" behaviour I state above.
Incidentally, the droppable page doesn't work at all in IE7 due to an
error on line 226, char 2 (message is "Object doesn't support this
property or method")... all other demo pages work fine.