Hello, we use wordpress 4.3.1 and wpml 3.2.7.
We have only two languages: english (default language) and italian.
When whe migrate our development site to the production site the home url of website is: https://<my_site>/en. if we try to another migration the new home url is: https://<my_site>/en/en and so on.
With the old version of the plugin that did not happen.