Understanding the behavour of sortable('refresh')
I'm using the sorable 'items' config value to prevent certain child items from being sortable. I dynamically add new items to the sortable container, and I expect the sortable('refresh') method to re-select the sortable items, but i'm not able to get it to behave like that.
I have put together a simple test page showing this: http://jsbin.com/opilo
In that test, I'd expect the first list item to be prevented from sorting. Why does it not behave like this?