Dear Support team,
We started using yours drag&drop functionality and found strange bug on IE.
You can check it on the screencast: http://screencast.com/t/ZvyclZMOjy - it was recorded on your demo.
First I start draging element. You can see how cursor changes during drag - it takes cursor type from under element but only for a while, then it changes for normal drag cursor.
Then, I click Alt+Tab and changing focus to opened near IE developer tool. I have focus to IE developer tool but i can still move element in your demo. You can see that during dragging there is no change in cursor type.
Ten I click Alt+Tab and focus back to IE browser. You can see that during dragging there is still bug - having focus on IE page you have this strange behaviour.
Can you into it? It stops our work on new page for our client.
Radek (Doer) Maziarka