Menu links duplicated on node/%node/edit pages I've a strange problem.
I've a multilingual site with many menus configures as "Translate and localize".

Everything works, every menu link has his language, but ONLY when I go to a node/%nid/edit page the system prints all links, on both language (on every language)

This behaviour there is on every theme. I've i18n modules enabled.

What's wrong?
I'm not sure i fully understand the question, but please take a look to this post:

https://drupal.stackexchange.com/a/96963/30465

It seems related to your question.

I this it will be related to the language configuration fallback (since there is no language suffix inlcuded)

You could for example try

http://www.example.com/en/node/%nid/edit

if that works correctly (and only shows the engish menu links), you know that it will be a problem with language fallback.

Hope this helps, feel free to let me now if you need more!! :)