That is simply an obscure poorly documented Italian medieval story that cannot be tested.
Catholicism is a fascinating, fulfilling, and flawless faith
That is the manner of cultic assent that isrequired,
“The Vicar of Christ is the Vicar of God; to us the voice of the Pope is the voice of God. This, too, is why Catholics would never dream of calling in question the utterance of a priest in expounding Christian doctrine according to the teaching of the Church;”
“He is as sure of a truth when declared by the Catholic Church as he would be if he saw Jesus Christ standing before him and heard Him declaring it with His Own Divine lips.” —“Henry G. Graham, "What Faith Really Means", (Nihil Obstat:C. SCHUT, S. T.D., Censor Deputatus, Imprimatur: EDM. CANONICUS SURMONT, D.D.,Vicarius Generalis. WESTMONASTERII, Die 30 Septembris, 1914 ); http://www.catholictradition.org/Tradition/faith2-10.htm]
“..The reason of this stand of his is that, for him, there can be no two sides to a question which for him is settled; for him, there is no seeking after the truth: he possesses it in its fulness, as far as God and religion are concerned. His Church gives him all there is to be had; all else is counterfeit...
Holding to Catholic principles how can he do otherwise? How can he consistently seek after truth when he is convinced that he holds it? Who else can teach him religious truth when he believes that an infallible Church gives him God's word and interprets it in the true and only sense? — (John H. Stapleton, Explanation of Catholic Morals, Chapters XIX, XXIII. the consistent believer (1904); Nihil Obstat. Remy Lafort, Censor Librorum. Imprimatur, John M. Farley, Archbishop of New York ; http://www.gutenberg.org/files/18438/18438-h/18438-h.htm)
Which submission is based upon the premise of a perpetual infallible (conditionally) magisterium, and is not the basis upon which the church began, but which was upon Scriptural substantiation, in dissent from those who, like Rome presumed of themselves above that was written.
There is more than one Eucharistic miracle. Here they are listed by country. http://www.therealpresence.org/eucharst/mir/engl_mir.htm
Is it the movie Groundhogs Day? We have contraception, and transubstantiation posted again in one day. Shall I wait for 3am to get a Queen of heaven ping? A dawn posting of Luther and milkmaids?