The keyboard object hasn't changed since October, so I can't imagine how the problem is there.
The solution to the Chrome sticky keys issue was to block Chrome handling a left click - this seemed to cause problems with keyboard input, so now the HTML5 game explicitly asks to handle left clicks by itself. However since it blocks the browser action, I think it prevents the iframe running the game from ever getting focus, which means it also never gets keyboard focus so never gets keyboard events (they're probably only sent to the parent frame). I did add code that said if it's in an iframe, let the browser handle the action by itself, in theory letting it work like it did before, but that doesn't seem to have worked for you guys. I'll take another look tomorrow and see if I can get a fix out then.
Sorry for the continuing problems but this all stems from trying to work around that annoying keyboard bug in Chrome - this should never have been an issue, but the workaround to the bug is causing more issues :-\</p>