Apeended comma in languages Power editing

Using Power editing, if you set (primary) language to any language and leave (secondary) language to (no change) a comma is appended resulting in a non existent language.
for exemple choosing Abkhaz
(primary) language is set to
Abkhaz,
and you get
(xxx)
in the Profile/Statistics/Memes/Statistics/Library statistics/Language of the book page

by the way, I think it would be better to change labels to

(primary language)
(secondary language)
(original language)
(reviews language)

or to
(primary)
(secondary)
(original)
(reviews)

Duplicate (more or less) of http://www.librarything.com/topic/99519. One or the other should be closed - as I haven't seen either bug, I'm not going to change its status, though.

Update on why this isn't fixed yet (see http://www.librarything.com/topic/107331).

Duplicate. Closing this one.