Reduced test case highlighting Safari's issue displaying SVG fragments.
The following works as expected within the latest Chrome/Firefox/Opera browsers, but renders incorrectly in Safari 7.1 on OS X Mavericks and iOS 8.
Correct rendering should display a car, a flag, a set of cogs and then another car.
Sometimes the wrong image is displayed, other times no image at all, and when using hover effects images can be rendered with inline artefacts.
A more extreme example of the problem can be seen at https://sidepodcast.com/f1-encyclopedia