Oracle has indeed taken on Mac OS X specific changes. There are a few cosmetic issues still not resolved as of this update. But they are known, and in their bug

Oracle has indeed taken on Mac OS X specific changes. There are a few cosmetic issues still not resolved as of this update. But they are known, and in their bug tracker. Oracle and Apple have actually worked together closely and openly on this. Anyone can sign up to the macosx-port-dev@openjdk.java.net and follow the progress.