FieldArray is never pristine again

[maciejmyslinski]

Are you submitting a bug report or a feature request?

bug report

What is the current behavior?

When empty '' initial value is present, Array Fields are never pristine again like normal Fields.

Steps to reproduce:

1. Enter some value into the usual field, then revert the change. The field is pristine.
2. Enter some value into Fruit Fix package naming #1 field. Revert the change. The field is pristine.
3. Enter some value into Fruit Fix links to package #2 field. Revert the change. The field is NOT pristine.

What is the expected behavior?

I would expect Fruit #2 field to be pristine.

Sandbox Link

What's your environment?

package	version
final-form	4.11
react-final-form	4.0.2
final-form-arrays	1.1.1
react-final-form-arrays	2.0.1

Other information

[erikras]

This is stemming from similar undefined/'' confusion as discussed here. #23 (comment) Not a bug.