Creating Users Under Different Language

I’ve noticed that when adding users to Xwiki and changing the default language to something else this breaks the “[” usage when editing a page and trying to reference a user.

Wondering if anyone knows how to change user profiles to the current language.
I figure should be able to do this at the DB ?

You can change the “Default Language” of a page (the user profile page in this case) by editing the page with the Wiki editor. You need to have Multilingual enabled though (from the Localization section in the Wiki Administration) and you need to configure your user profile to be an advanced user in order to get the Edit drop down menu with the Wiki editor option.