Resolved in: 3.8
If you are using the Divi theme and you have chosen to use the standard editor for translating content, you may find out that some internal taxonomies will be missing from your translations.
We encourage you to switch and use WPML’s Translation Editor and use it to translate your Divi layouts.
To enable the Translation Editor, go to the WPML -> Translation Management page and click on the Multilingual Content Setup tab. Here, look for the How to translate posts and pages section and select the Use the translation editor option.