Today, I was on the site waiting for the new puzzles to appear, logged in, and when they did appear the tabs at the top for the day's puzzles were already green, though I had not even seen them yet. It was only the puzzles I had solved yesterday, though - they just didn't go back to white. However, on the 7x7 difficult, when I solved it the tab didn't turn green. Also, I appear to have gained an extra point after totaling up the points from solved puzzles and timed puzzle bonuses (in which I got my first daily top 10 in 6x6's
)
It's a minor bug, but still worth mentioning.