In the page at the URL, we don't correctly repaint, so you see multiple "catch me" instances when there should only be one.
Is this a regression from Safari 4.0.4?
Not a regression from 4.0.4
Created attachment 59850 [details] Reduced case Reproduced and reduced on Windows with rev. 61966. A SPAN-element relatively positioned outside its containing DIV-element is not repainted properly, when un-hovering the containing DIV-element.
Looks fixed to me.