IE7 File Browser document title and icon position

When opening up a number of folders (until the point at which the div#file-system-all begins to overflow), in IE7 the document title and icon do not move correctly with the rest of the items. They appear to stay in the original place on the screen (as if they were set to position:static). (see attached image for an example of the item not moving in sync, when opening up the structure, the item does appear correctly).

Clicking within the div restores them to their correct location.