Chinese handwriting bug
When using the trackpad handwriting function for typing chinese, a bug leads to the panel only appearing on space 1, if you are using spaces. the panel will not appear on other spaces if you launch it in other spaces. to solve this problem, simply locate the app at System/library/inputmethods/chinesehandwriting. keep this window open and launch system preferences, expose & spaces. add this app into spaces and make it run on every space instead on space1. reboot and problem will be fixed.