Prerequisites:
Run test-fixtures.

Steps to reproduce:
1. Go to Product catalog/Products
2. Add translation to product (name new product code)

Actual result:
Product code is overridden. Latest translation overrides product code for earlier translations.

Expected result:
Each translation should retain 'base' product code. 'ibexa_product_specification' field should have 'product code' (Value/Code) disabled in case of translating product.

Note: This occurs if 'ibexa_product_specification' field has 'Translatable' option checked.