Cant see new fields in new version Twitkit Preferences window

The new version of Twitkit has a problem with the settings. The window that opens for preferences is too small to contain the 3rd form field (which looks like a url shortening field, from what I can read). But that field cannot really be read (just the very top of the letters can be seen), and if there are any fields below that one, I certainly can't see them at all. This is on Firefox 3.0.8 on a Linux (Ubuntu) box.

Oh and yes, I tried resizing the window, but it didn't help. Window gets bigger, but form doesn't.