In my box, the mainwindow always remembers its last position and will move to the same place at the next time it starts.状态条的位置不能记忆，重新登录后位置变回最初的位置了。
This means that when you switch to another window, the mainwindow of skim should follow to the new window's title bar, r建议把这个输入状态条做小一点，并且只能在窗口标题栏里左右移动。