That seems more of a problem with Kindle itself. Tons of internet text boxes require the "Enter" button to input text.

I just did a google search and a lot of people complain about the same thing. You might want to try this hack that is supposed to change the ".com" button back to an enter button on Kindle:
http://thehelpfulhacker.net/2011/11/...ork-on-kindle/

This has been fixed as well. Is there anyone else having the issue of not seeing all of their battles?