Our customer want to be able to add thin spaces in addition of non breaking spaces. But when we try to add the character
in source of ckeditor, ckeditor doesn't keep it and convert it as a basic space.
After research, it seems ckeditor allow the entity
. I don't know if I have a configuration which prohibit this (I tested with full html profile with non html correction, that's doesn't fix my problem) or if it's a particular configuration of the Drupal's ckeditor. In this case, how to change it?