终端中执行以下命令
defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode -bool true defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode2 -bool true
这样就好了。
如果想还原回来，执行下面的
defaults delete NSGlobalDomain NSNavPanelExpandedStateForSaveMode
defaults delete NSGlobalDomain NSNavPanelExpandedStateForSaveMode2
原文：https://www.cnblogs.com/junqilian/p/12154334.html