Wow...I see what you mean. Using the dev tools these fields are limited to a max field length of "1".. I have searched and can not determine if this input field is file driven or DB driven...

As you know, this is not the normal display for a normal cart.

Until, another might see and post to this, you could try to re-upload the files to your server, as this should assist if there is a corrupt file in the bunch. If it is DB driven though this will not correct it.

If you know how to view your DB with phpmyadmin, you could check the field lengths in the customer data tables and look for fields that are 1 charater in length where you know they should be longer.