Wanted to post it in trac, but the server is crashing regularly and new accounts can not be set up at the moment...
$( '.drop' ).droppable({
            drop: function( ev, ui ) {
              ...
            }
});

$( '.drop' ).bind( 'drop', function( event, ui ) {
        console.log( 'test' );
});

I added at first a callback within the droppable function. Later on I register the drop event to do some more stuff. I can't combine them, because the second part is only needed in one case and so also only loaded then.

In JqueryUI 1.7.1 it works, in 1.8rc1 not. Is this a bug or was something changed there?