Hi,
We've just started with the trial version (top product by the way).
The editor is placed in a pageview, inside a multipage with the ie:tabstrip webcontrol.
When you expand any of the dropdown lists, or right click to get a context menu, the object appears offset from it's correct position.
The other thing that might be relevant is that the page that contains the editor is in an iframe, the iframe has it's top set to 0 and padding-top set to 160