As of yesterday I started noticing that the arrow on the mobile site's header isn't functional (click-able / touchable) as it once was. To clarify, the entire site renders fine, but the top portion where the StackOverflow logo appears with the arrow is no longer a link. Previously I was able to touch that arrow and it would reveal my rep and whatever else it typically displays. Now the arrow does nothing when pressed. I received a comment from a user and the arrow changed to a red "1" to indicate that, but that wasn't responsive when pressed either.
I'm using a WP7 and I am logged in. I've tried clearing my browser history just in case but that didn't help.
Has the mobile site changed or is this a legitimate bug?