Steps to reproduce:

1. Clean installation of Ibexa DXP Commerce.
2. Create a new Product with 2 variants of Color and size with different prices.
3. Open the newly created Product in the shop (frontend).
4. Try to change variants (price doesn't update, the button is not clickable).
5. Go back to the Back Office and go the eCommerce -> Configuration Settings.
6. Change B2C mode to B2B under Advanced catalog features key.
7. Try to add this product to basket.

Result:
You are unable to add any variant to the basket, submit button is disabled, price doesn't update.

Expected result:
You should be able to see price recalculating when changing variation and add the product to the basket.

Note:
Notice JS error in the console.