I can understand a new 'feature' having some negative effect on a user's browsing habits for security sakes, but if it's a new feature across the board, then why does it only occur randomly, and only on 2 websites?
Although reformatting just to get rid of it is a bit extreme, as in my case it would take a day to do so - considering the amount of apps I'd have to reinstall. I do however do a archive and install about every 6 months, and if there's been something annoying going on in that period then I tend to rebuild/refresh all my apps/preferences.
Can't stand Chrome, so that's not a solution for me, and it's such a small issue that I can't even be bothered moving my mouse an inch to the right to click the Firefox or Opera icons instead (only use them for some websites that just don't render properly on Safari, or that have weird javascript calls that Safari blocks for security reasons).