This thread is resolved. Here is a description of the problem and solution.
Problem: I am trying to translate Custom product tabs of WooCommerce products. Solution: The custom tabs are actually custom fields for each product. That's the reason why you currently can't change them globally, and have the change be applied automatically to all the products where you used them. For now, you can translate the tabs as I explained in a previous message, when translating the product. This is the only way to do this, giving the structure of the tabs (being custom fields).
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