Thanks for all the feedback and bug reports! I am locking this thread so people don't keep answering it when we no longer monitor it.
If you see a bug or want to raise a feature request, please do so in the usual manner, as a new question.
Most? Well, yes, the new design is dependent on a SE network-wide update (a new base css framework) that the design team have been working on. This is an ongoing effort and we will be launching the new pages as sites are moved to the new design.
But it's possible that it's not quite perfect yet. If you find any bugs and have any feedback to give, please post these as answers to this post.
Just post one issue per answer - that would help us focus on specific items one at a time.