SN-0807 已核对来源，附原文与上下文。
状态栏的第一格与菜单项的帮助说明共享：当你悬停在菜单项上时。因为我们所有菜单项的说明都是空白，所以悬停在菜单上时它就被替换成了空白。
The first panel of the status bar is shared with the help description of menu items as you hover over them. Since all our menu item descriptions are blank, it replaces it with blank when you're hovering in a menu.
