Disable contact suggestions when filling out PDF forms in Preview on Mac

How do you turn off contact suggestions when filling out pdf forms in Preview? It is seriously annoying to have this little suggestion box pop up every time I fill out anything resembling a place to put a name or address, as if every name or address is in my contact, or that I even want them to be. And it doesn't even recognize that the name, address or whatever isn't what it is suggesting. Meaning it is exceedingly dumb for sticking around all the while I am typing.

[Re-Titled by Moderator]