I created a 4 page fillable form and locked it for users to complete and send back to me. When a user opens the form they can tab through the first page fine, but when you hit tab to go to the next field on the next page it skips to the top of the last page. If you scroll up and place your cursor in the first field of the 2nd page it will then let you tab through the rest of the document fine. I've searched for a possible answer to why it's doing this to no avail. Any help you could provide is greatly appreciated!
I believe you are dealing with the fact that Word decides the tab order of the fields automatically. There isn't much you can do about it from the standard interface, but here is an MVP article with a way to work around it.