Hidden chars in Document

Hi,

I have a user who doesn't see some some field in the document (transaction CV01N, CV02N, CV03N), in Additional Data tab.

The user sees only the fields with a values inside. If the field is empty without any value she he doesn't see anything.

Other users see all the fields (full and empty) so it seems is something not related to roles or missing authorization.

Any idea? How can I solve this problem in this user?

Here below some print screens.

This user sees only the fields here below:

All the other users see the same document in this way (also the fields empty, without any value):

Same roles, parameters. What is the difference in the first user? I really do not understand.

Thanks

Fabio