Incorrect VAT calculation in 2.5.1

Hi,

I’ve just noticed an issue after updating to WooCommerce 2.5.1
I have this store that has Tax calculations enabled, with the products prices being inserted with VAT included.
I also have the store configured to show prices including tax, both at the Store, Cart and Checkout pages.

Configuration screen:
https://www.dropbox.com/s/xdchupigkf8p17i/Screenshot%202016-01-26%2017.44.07.png?dl=0

On the Standard Rates, I have only one rate configured:
https://www.dropbox.com/s/ivyl7u10dmpb2vg/Screenshot%202016-01-26%2017.45.07.png?dl=0

Finally, the product is configured to have a price of 120€, which considering the setup above should be the price users see on the site:
https://www.dropbox.com/s/sqq3i7ak1v1icq9/Screenshot%202016-01-26%2017.46.02.png?dl=0

Instead, what they get is this:
https://www.dropbox.com/s/y9qz8r9w2sz5s1w/Screenshot%202016-01-26%2017.46.49.png?dl=0

Which is precisely the product price without the VAT.

You can see the live site here:
https://sbnails.webipack.pt/shop/cabelo/progressiva-slett/step-3-creme-reconstrutor-selante-1000ml/?a

Is this something related to the latest update?

https://www.ads-software.com/plugins/woocommerce/

Note: This is a net ticket for what I described before in https://www.ads-software.com/support/topic/showing-values-without-vat-for-logged-in-users?replies=2 because that one had a misleading title.