Session lost when languages in domains is used with WooCommerce

Overview of the issue

Steps to reproduce:

1. In WPML – Languages, select “Languages in domains”
2. Attempt to purchase an item on front end
3. A notice is shown, saying that you can’t send purchase info to Paypal.
   If you don’t fill out form completely, you are prompted to do so but your cart is now empty.

Expected results: Cart should retain info.

Workaround

There is no workaround for now.

Issue will be fixed in the next releases of WPML or WooCommerce Multilingual.