to force horizontal scroll
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to trigger bug narrow window horizontally until horizontal scrollbar is triggered. Then use the scrollbar to scroll to right a little bit but leave link in view.

• 1. Hover over link to get it to reposition itself correctly
  
  : but then
  
  
• 2. with the scrollbar not in it's farthest left position, drag the window back to nearly full width and you see the scrollbar is still in place IE layout has widened. Now hover over the link on and off to see layout inch back to place with each mouseover. I'm pretty sure it moves in proportion to the amout of pixels that the right co-ordinate of it's position is set to. As it doesn't move the layout if right co-ordinate is set to zero

Update: A workaround?

Setting the body to position relative and giving it a 'layout' dimension cured it in Strict Mode, but I had to add a "fake" body wrapper div to be able to make it apply in quirks mode because it recognises body as the root element and won't apply position: relative; directly on the root element