Not a bug per se, but the back button in iPad MobileSafari is now 6mm away from a tab close button. I've already lost my page several times. I think iPad-toting grandparents will fare even worse. Sloppy.

While I'm moaning, the 'linen' pattern is on course to be the new 'brushed metal'. The notifications sheet you can now pull down from the status bar has a harsh version that looks like worn denim and is completely incongruous.