I created the simplest example that I could to illustrate the problem. I uploaded the example project to my dropbox folder.
http://dl.dropbox.com/u/44434337/test_text_box.tgz
After downloading and decompressing it, run it with: jruby -S limelight open test_text_box
It will open a basic window with a 20% white box across it with the word "welcome" inside. The player was set to 'text_box' so click on the white box to get a blinking caret to the right of the "e" in "welcome." On OSX I can now type whatever free form text that I like and it displays properly. On Windows 7 x64 my typing has no effect (no text shows up, it doesn't beep, nada).
This was tested under JRuby 1.6.5 with Java7u5 (latest release from Oracle).
Any help is appreciated.
cr