As of today I not longer see new Post Notices across SE sites. They are all reverted to old ones.
Same happened with Close Vote dialog.
I have only single account, so I cannot be accidentally logged in as different user.
Is this intentional rollback or a bug?
According to New Post Notices rollout on Stack Overflow once you are in one group of users that either see or don't see new notices and you cannot change groups. Or at least that is how I read it.
During our initial launch period the new post notices (and all related changes) are being shown to 50% of users. There is no easy way to switch between the group of users seeing old or new notices. If there are things about the new notices that you dislike, please let us know in a respectful and constructive way. We are happy to receive and take all feedback into consideration.