I needed a place to store marketing and PR templates that were completely unrelated to the core of our product.
Of course the rule was "one service per team", so the CTO demanded that I store it together with our service, which is the part that performs customer authentication. Meaning, the part that is responsible for securing customer data and everything else. Whenever we had auditors checking it they're puzzled as to why there's marketing material storage inside the auth microservice.
This could have been the poster-child example of a good place do have a separate service, but no, the law was the law.
It's almost as if there's no such thing as a silver bullet.