WooCommerce - Filling the first and last name fields in the user profile - BUG?

If a user registers on the site (enter username and email) and THEN go to purchase, filling in the details of invoicing and shipping, the field name in the WordPress user profile is empty!

If the customer does not register before, but makes recording the time of purchase, then the name and surname of the user profile fields are populated.

Any solution?

Thanks.

See this screenshot of wordpress users list:

via Chebli Mohamed