Debian got the following bug report: (http://bugs.debian.org/225536):

When gtranslator starts the comment window is about two and a half
lines high, too small to see what it says. Even after enlarging the
window the comment text is truncated, like this:
                                                                          
     
[NOTE] Translate..y names.
                                                                          
     
Usually if there is some text in the comment field the user
should see it, so it is pretty bad for gtranslator to hide it.
                                                                          
     
Furthermore, even if the window is enlarged moving to the next item
snaps it back to the too small size.