A referenced quotation of this usage would help us to answer authoritatively.
However, the usage occurs occasionally, as in this extract from a test posed by the Organisation for Economic Co-operation and Development (OECD). The PISA 2018 Global Competence assessment measures students' capacity to examine local, global and intercultural issues and other matters ...
OECD
"The student must evaluate the information carefully and then consider whether the statement is truly a fact or if it goes beyond a fact and reflects the opinion of the author. In this way, the student must consider the reliability of the statements, which is related to the cognitive subprocess of «Weighing sources»."
This quotation makes clear that "beyond a fact" may deal with the interpretation of facts and the consequent formation of opinions.
As examples:
Fact: I see a policeman running after a badly-dressed running man who is clutching a laptop.
It goes beyond a fact for me to say that the policeman is chasing a criminal (=opinion).
Fact: I look briefly into a field and see a white cow standing still.
All I can factually say is that I saw a cow, one of whose sides was white.
It goes beyond a fact for me to say that there was a totally (= opinion) white cow in the field. The other side may have been black.