Faith, the belief in things unseen, never contradicts science, the belief in things seen. However, scientists who make claims that are beyond their data lose their mantle as scientists for such claims (about the unseen) and become philosophers of the metaphysical.
First up, the claim that faith never contradicts science (and visa versa) is nonsense. In the first instance, faith is something personal and will vary from person to person. So considering some of the fundamentalist beliefs of various of those posting in these type of threads, their faith - that Adam was literally formed from dust, for example, contradicts basic scientific knowledge of man's beginning. And the facts of man's origen contradicts their faith.
Secondly, science is NOT the belief in things seen. That's so obviously correct that I won't waste my time giving examples.
Thirdly, it is one of the hallmarks of the scientific endeavour for scientists to intentionally make claims that are 'beyond their data'. That is the very essence of a theory: To take the information you have and (as well as proposing a means by which the data is comprehensible) to formulate it in such a way as to say: 'If A and B are valid, then C', where C may be unseen, or even unknown.
To take Darwin as an example, he knew there was some way that favourable traits were being passed down through generations of organisms in such as way as to allow the survival of those best fitted to the environment. Genes weren't part of his data but he could still formulate a theory allowing for them without them being seen or even k own about. Was he therefore making a metaphysical claim?
And using Einstein as another, the maths for his theory of general relativity didn't balance because he was working on the assumption of a static universe. So he included the cosmological constant which allowed the maths to work and the theory to stand. As it turns out, that cosmological constant which he had to include turns out to be something that not only did he not see or have any data on, but couldn't envisagae the data in the first instance. It turns out to be Dark Matter. Do we slide Einstein and his theories into the pantheon of metaphysical philosophers?
Nonsense.