I don't know if this is really a bug since there are a couple of ways of working around the problem.
I have a numeric field (integer) with the caption "Phone Number". It expects a 10-digit number. However Acrobat/Designer thinks of this as a regular number and has a limit of 2,147,483,647. If the user enters a phone number that is higher than that, for example 555-555-5555, the phone number will be reduced to 214-748-3647.
The first work-around would be to use the phone number field in Designers library. It is treated as a text field that validates with 9999999999.
The other work-around is to change the numeric field from integer to float. Even though the user doesn't enter a decimal point, it still works.
I'm guessing Adobe can't increase the maximum number because that is probably a limit of JavaScript.
