Spherical earth is not in accord with ANY interpretation of Scripture. No one uses Scripture to teach earth is spherical. Yet, many Saints and ancients both describe from experience and from Scripture that earth is flat.
The flat earth "movement" wasn't started by Prots, but it was certainly maintained by many Prots. Flat earth is ingrained in the hearts and minds of those who read Scripture and Catholics who appreciate the Saints and Scripture.
St. Augustine taught that Scripture is silent on the shape of the earth and this view was, in time, accepted by the Church and eventually incorporated into magisterial teaching.
Of course, nobody uses Scripture to teach that earth is spherical. Since Scripture is silent on the shape of the earth, nobody ought to use it to teach that. Those who seek to learn the shape of the earth through science rather than Scripture are being good Catholics.
The Saints who interpreted Scripture as saying that the earth was flat, for the most part, did so before St. Augustine taught that Scripture was silent on the subject.
Catholics who appreciate that Scripture must be understood with the mind of the Church do not look for the shape of the earth in Scripture. Flat earth is the domain of those who, like Protestants, understand Scripture according to their personal interpretation.