Council of Trent Session IV states:
“Furthermore, in order to restrain petulant spirits, It decrees, that no one, relying on his own skill, shall,–in matters of faith, and of morals pertaining to the edification of Christian doctrine, –wresting the sacred Scripture to his own senses, presume to interpret the said sacred Scripture contrary to that sense which holy mother Church,–whose it is to judge of the true sense and interpretation of the holy Scriptures,–hath held and doth hold; [Page 20] or even contrary to the unanimous consent of the Fathers; even though such interpretations were never (intended) to be at any time published. Contraveners shall be made known by their Ordinaries, and be punished with the penalties by law established.”
So what was the consensus of the Fathers on the shape of the Earth? It was a ball.