Jim_P,
Try enlarging the box a bit more, and see if it helps.
If it doesn't, make sure there are no characters in your datafield that would cause the lines to skip, such as CRLF and such. It may be difficult to know, but you could try to manually type the field's content, and see if the same thing happens. If not, then there could be something in the field.
If all fails, then we might need to take a closer look at the database file itself. You can report a technical support issue by going on our web site, and then Services->Support->Report an Issue. We will be able to assist you in finding out what causes the wrapping.
Regards,
Rapha