#Unity Editor for Mac menu bug
tested @ Unity 5.1.3p2 ~ Unity5.2.0p1
##Problem Unexpected events will be emitted.
##How to reproduce
- open some window.
- click it once.(set focus to that window.)
- Open Mac OS X's menu from menu bar item "Edit"
- Close by click same item.
- All events will be raised. It is maybe bug.
