Undoubtedly they did not see a 14th century manuscript.
Jerome, at least, saw something that agreed with this manuscript in one point against the Greek, as he comments on it noting that the Hebrew original is more clear than the Greek on a particular point and explaining how the Hebrew reads. Going through the Fathers in detail on this point would be interesting but beyond my temporal capabilities at the moment.
They also never saw your Bible. Or Nestle Aland. Or a whole host of other things. A few may have seen Sinaticus.
If you think Jerome is a liar, then you have some serious thinking to do about how God preserved the bulk of revelation for the bulk of Christians for the bulk of the History of the Church, for they were dependant on Jerome and his judgment, and were definitely not reading the SP.
“Jerome, at least, saw something that agreed with this manuscript in one point against the Greek”
Which doesn’t really establish much more than that a Hebrew version existed, and that the Rabbis copied at least one part of it faithfully. I wouldn’t extrapolate that to assume they copied everything else faithfully.