It seems I cannot insert a non-breaking space ( ) in a text with CKEditor. At least on my Drupal websites. If I do Shift-Enter and go check in the source code it inserts a normal space, and if I manually put a in the source code, it removes it.
Is there a way to activate this essential feature? I do not want my numbers to be cut in two or my units be separated from my numbers, or my semi-colons to be put alone on a new line!