I just sat down to study, got message "code update, please refresh" so I did. However now I cannot write characters. The cursor or pen with tablet will not "write" inside the box a character is to be written in. It moves elsewhere on the screen but gets stuck at the boundary of that little box. This is on Windows xp running Chrome.
(Sorry, I did not recognize that this is the same behavior described in the previous forum thread with the Android subject name)