Thread:Support/GRAMMAR problem in Hebrew

I am trying to understand why doesn't MediaWiki:Twn-mainpage-projectlist/he work as expected here.

The correct result string is supposed to be: "מיזמים המשתמשים ב־translatewiki.net"

The actual result when i use the preview button on the translation page is correct: "מיזמים המשתמשים ב־translatewiki.net".

But when i save it, the result that i see is this: "מיזמים המשתמשים בtranslatewiki.net". This is also what i see when this string is displayed on the actual main page of TWN when my interface language in the preferences is Hebrew.

The difference is that in the correct result there's a Hebrew hyphen (maqaf) between the Hebrew letter "ב" and the name "translatewiki.net". The hyphen is added by LanguageHe.php. The code seems to be simple, but it seems that it only works in the preview and not in the actual display. What's the problem?