Enhanced translation editor
Problem gone. Thank you for fixing :) But there is some other problem. Some message doesn't show "message definition" (original message), "message in other language", "suggestion" etc in the popup window. I saw this on "centralauth", "mwe-upwiz" groups. (screenshot)
You can check the source code of that dialog to see HTML comments explaining why they are not shown.
I've filed bugzilla:33647 per Nike's request.
Thank you. The problem is here again. Something must have happened during the last 1 1/2 hours. I was not happening back then.
Normally it works as expected. But sometimes I get wrongly sized small dialog when adding additional parameters to query string like "&uselang=en" (eg). No comments in such cases.
about not displaying message properties: such messages give html comment like - <!-- Box translation-memory not available: message does not have definition -->. Still no clue.